View source for Renai Circulation

{{Use mdy dates|date=August 2023}}
{{distinguish|renal circulation}}
{{Infobox song
| name       = Renai Circulation
| cover      = Bakemonogatari_JPN_DVD_vol_4.jpg
| caption    = Digital release cover 
| alt        =
| type       = 
| artist     = [[List of Monogatari characters#Nadeko Sengoku|Nadeko Sengoku]] ([[Kana Hanazawa]])
| album      = [[List of Monogatari episodes#Bakemonogatari|Bakemonogatari]] Ongaku Zenshū Songs &amp; Soundtracks
| released   = {{start date|2010|1|27}}
| recorded   = 2009
| studio     =
| genre      = {{flatlist|
* [[J-pop]]
* [[anime song]]}}
| length     = 4:16
| label      = [[Aniplex]]
| writer     = [[Satoru Kōsaki]]
| lyricist   = [[Meg Rock]]
| producer   = [[Satoru Kōsaki]]
| prev_title = 
| prev_year  = 
| next_title = 
| next_year  = 
| misc       =
{{External music video|{{YouTube|1MS0JaVzVIU|time=270|"Renai Circulation"}}}}
}}
{{nihongo|"'''Renai Circulation'''"|恋愛サーキュレーション|Ren'ai Sākyurēshon|{{literal translation}} "Love Circulation"|lead=yes}} is a song from the 2009 Japanese [[anime]] television series ''[[List of Monogatari episodes#Bakemonogatari|Bakemonogatari]]'' (the animated adaptation of the first book from the ''[[Monogatari (series)|Monogatari]]'' series by [[Nisio Isin]]) and performed by [[Kana Hanazawa]] as her character, [[List of Monogatari characters#Nadeko Sengoku|Nadeko Sengoku]]. Composed by [[Satoru Kōsaki]] with lyrics written by [[Meg Rock]], "Renai Circulation" serves as both Nadeko's character [[image song]] as well as the opening theme song in episode 10 of ''Bakemonogatari'', which first premiered on September 11, 2009, to represent the "Nadeko Snake" story arc.

"Renai Circulation" was released on digital services and as a limited edition CD bonus with vol. 4 of the DVD and Blu-ray home releases of ''Bakemonogatari'' on January 27, 2010. It was later given a wider physical release and compiled on the series' [[soundtrack album]], ''{{ill|Bakemonogatari Ongaku Zenshū Songs &amp; Soundtracks|ja|化物語 音楽全集Songs&Soundtracks}}'' on December 21, 2011.

"Renai Circulation" received praise for its "cute" melody as well as Hanazawa's vocals. After the initial release of "Renai Circulation", in 2010, the song inspired a trend of [[cover dance]]s and mash-ups on [[Niconico]]. In the late 2010s, the popularity of the song resurfaced again, this time globally, through [[TikTok]].

==Background and release==

[[File:Kana Hanazawa.jpg|left|thumb|upright=0.8|[[Kana Hanazawa]] (pictured in 2010), the [[Voice acting in Japan|voice actress]] of Nadeko Sengoku, performed "Renai Circulation."]]
"Renai Circulation" is a song from the 2009 anime series ''[[List of Monogatari episodes#Bakemonogatari|Bakemonogatari]]'' (the animated adaptation of the first book in the ''[[Monogatari (series)|Monogatari]]'' series by [[Nisio Isin]]) and serves as the character [[image song]] for the character [[List of Monogatari characters#Nadeko Sengoku|Nadeko Sengoku]].<ref name="jcast 2021-05-05">{{cite web | first=Takashi | last=Ōmiya | url=https://www.j-cast.com/2021/05/05410471.html | title=化物語「恋愛サーキュレーション」はTikTokにピッタリ？ 10年経て再ブレークの理由、専門家が分析 | trans-title="Renai Circulation" from ''Bakemonogatari'' is perfect for TikTok? Experts analyze the reason behind its second breakthrough after 10 years | language=ja | work={{ill|J-Cast|ja|ジェイ・キャスト}} | date=2021-05-05 | accessdate=2023-08-01 | archive-date=December 4, 2022 | archive-url=https://web.archive.org/web/20221204150833/https://www.j-cast.com/2021/05/05410471.html | url-status=live }}</ref><ref>{{cite web | url=https://natalie.mu/music/news/76929 | title=花澤香菜3rdシングル「happy endings」PV＆コメント公開 | trans-title=PV and comments for Kana Hanazawa's 3rd single "Happy Endings" revealed | language=ja | work=[[Natalie (website)|Natalie]] | date=2012-09-21 | accessdate=2023-08-01 | quote=「happy endings」は、花澤が声を担当したアニメ「化物語」千石撫子のキャラクターソング「恋愛サーキュレーション」を手がけたmegrockと神前暁による書き下ろし。 ["Happy Endings" is a new song written by Meg Rock and Satoru Kōsaki, who wrote "Renai Circulation", the character song for Nadeko Sengoku, who Hanazawa voiced in ''Bakemonogatari''.] | archive-date=August 20, 2022 | archive-url=https://web.archive.org/web/20220820063618/https://natalie.mu/music/news/76929 | url-status=live }}</ref> It first appeared as the opening theme song of episode 10, "Nadeko Snake, Part 2",<ref name="jcast 2021-05-05"/>{{efn|name=ep10|"Renai Circulation" also appeared as the opening theme song of episode 9 in the home release version.<ref name="famitsu 2022-06-19"/><ref name="ann 2017-03-16"/>}} which was originally broadcast on September 11, 2009 on [[Tokyo MX]],<ref>{{cite web | url=https://thetv.jp/program/0000004973/10/ | title=第10話 化物語「なでこスネイク 其ノ貮」 | trans-title=Episode 10 of ''Bakemonogatari'': "Nadeko Snake, Part 2" | language=ja | work={{ill|The TV|ja|ザテレビジョン}} | accessdate=2023-08-01 | archive-date=August 3, 2023 | archive-url=https://web.archive.org/web/20230803164252/https://thetv.jp/program/0000004973/10/ | url-status=live }}</ref> to coincide with "Nadeko Snake", a story arc featuring Nadeko as the main character.<ref name="famitsu 2022-06-19">{{cite magazine | author=Shishimomofly | url=https://www.famitsu.com/news/202206/19265186.html | title=『化物語』のOP曲『恋愛サーキュレーション』、"怪異の仕業"だと話題になった逸話といえば？【YouTubeでアニソン】 | trans-title=What if I said a story about how "Renai Circulation", the opening theme song to ''Bakemonogatari'', is the "deeds of oddities" that became a hot topic? (Anime songs on YouTube) | language=ja | magazine=[[Famitsu]] | date=2022-06-19 | accessdate=2023-08-01 | archive-date=June 30, 2022 | archive-url=https://web.archive.org/web/20220630043329/https://www.famitsu.com/news/202206/19265186.html | url-status=live }}</ref> The vocals were performed by Nadeko's [[Voice acting in Japan|voice actress]], [[Kana Hanazawa]].<ref name="jcast 2021-05-05"/>

"Renai Circulation" was given a limited physical release as a CD bonus in vol. 4 of the DVD and [[Blu-ray]] limited edition home releases of ''Bakemonogatari''.<ref name="ascii 2010-01-27">{{cite web | first=Masahiro | last=Itō | url=https://ascii.jp/elem/000/000/493/493007/ | title=延期されるも人気は衰えず！ 「化物語」第4巻が発売！ | trans-title=Still popular after being delayed! Vol. 4 of ''Bakemonogatari'' is released | language=ja | work=[[ASCII Media Works]] | date=2010-01-27 | accessdate=2023-08-01 | archive-date=March 27, 2023 | archive-url=https://web.archive.org/web/20230327035537/https://ascii.jp/elem/000/000/493/493007/ | url-status=live }}</ref> The home releases were originally scheduled to be on sale on December 29, 2009,<ref>{{cite web | url=https://gigazine.net/news/20100305_bakemonogatari_bd6/ | title=「化物語」BD＆DVD第6巻「つばさキャット(下)」の発売が"制作上の都合"により3月24日から6月9日に延期 | trans-title=Release date of ''Bakemonogatari'' Blu-ray and DVD vol. 6, "Tsubasa Cat (Part 2)" has been postponed from March 24 to June 9 due to "production issues" | language=ja | work=Gigazine | date=2010-03-05 | accessdate=2023-08-01 | archive-date=August 3, 2023 | archive-url=https://web.archive.org/web/20230803164255/https://gigazine.net/news/20100305_bakemonogatari_bd6/ | url-status=live }}</ref> but they were postponed until finally releasing on January 27, 2010.<ref name="ascii 2010-01-27"/> "Renai Circulation" was also released on digital services on the same day.<ref>{{cite web | url=https://music.apple.com/jp/album/%E6%81%8B%E6%84%9B%E3%82%B5%E3%83%BC%E3%82%AD%E3%83%A5%E3%83%AC%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B3-%E5%8C%96%E7%89%A9%E8%AA%9E-single/1535804170 | title=恋愛サーキュレーション(化物語) | trans-title=Renai Circulation (Bakemonogatari) | language=ja | work=[[Apple Music]] | accessdate=2023-08-01 | archive-date=August 2, 2023 | archive-url=https://web.archive.org/web/20230802033336/https://music.apple.com/jp/album/%E6%81%8B%E6%84%9B%E3%82%B5%E3%83%BC%E3%82%AD%E3%83%A5%E3%83%AC%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B3-%E5%8C%96%E7%89%A9%E8%AA%9E-single/1535804170 | url-status=live }}</ref> On December 21, 2011, "Renai Circulation" saw a wider physical release on the [[soundtrack album]] ''{{ill|Bakemonogatari Ongaku Zenshū Songs &amp; Soundtracks|ja|化物語 音楽全集Songs&Soundtracks}}''.<ref>{{cite web | url=https://www.oricon.co.jp/prof/183/products/942606/1/ | title=「化物語」音楽全集 Songs&Soundtracks | language=ja | work=[[Oricon]] | accessdate=2023-08-01 | archive-date=August 2, 2023 | archive-url=https://web.archive.org/web/20230802033323/https://www.oricon.co.jp/prof/183/products/942606/1/ | url-status=live }}</ref>

==Composition and lyrics==

"Renai Circulation" is composed by [[Satoru Kōsaki]] with lyrics written by [[Meg Rock]].<ref name="jcast 2021-05-05"/> Kōsaki felt it would be interesting to feature Hanazawa rapping in a gentle manner, inspired by {{transl|ja|[[Shibuya-kei]]}} music and Japanese hip-hop artist Kaseki Cider.<ref name="MACC2">{{Cite web |last=Fuwa |first=Ryozo |date=August 10, 2021 |title=音を極める――メディア芸術の音を創造した人々 第4回 作曲家・神前暁（後編） |url=https://mediag.bunka.go.jp/article/article-17932/ |website=MACC |access-date=July 29, 2024 |archive-date=December 5, 2023 |archive-url=https://web.archive.org/web/20231205115834/https://mediag.bunka.go.jp/article/article-17932/ |url-status=live }}</ref> Similar to Hanazawa's song "Melody", "Renai Circulation" is focused on a narrative with rap elements against a "funky tune."<ref>{{cite web | first=Shigeaki | last=Usuki | url=https://natalie.mu/music/pp/hanazawakana/page/4 | title=花澤香菜「claire」インタビュー | trans-title=Interview with Kana Hanazawa about ''Claire'' | language=ja | work=[[Natalie (website)|Natalie]] | date=2013-06-15 | accessdate=2023-08-01 | quote=もともと語りやラップ的なファンキーチューン、そしてスラップ（チョッパー）・ベースというリクエストがあったのですが、かといって「恋愛サーキュレーション」でもなく [...] [Originally, there was a request for a narrative rap-like funky tune, and then a slap bass, but [the song] is not "Renai Circulation"... | archive-date=April 7, 2016 | archive-url=https://web.archive.org/web/20160407085713/http://natalie.mu/music/pp/hanazawakana/page/4 | url-status=live }}</ref> {{ill|J-Cast|ja|ジェイ・キャスト}} described the song as a "light pop tune" that makes use of Hanazawa's vocals.<ref name="jcast 2021-05-05" /> [[Anime News Network]] described the song as a "starry-eyed love song" that reveals Nadeko's "conflict and character."<ref name="ann 2017-03-16">{{cite web | first=Nick | last=Creamer | url=https://www.animenewsnetwork.com/review/bakemonogatari/episode-9/.113374 | title=''Bakemonogatari'': Episode 9 | work=[[Anime News Network]] | date=2017-03-16 | accessdate=2023-08-01 | archive-date=February 16, 2023 | archive-url=https://web.archive.org/web/20230216071653/https://www.animenewsnetwork.com/review/bakemonogatari/episode-9/.113374 | url-status=live }}</ref> ''Kai-You'' described the lyrics as depicting Nadeko's feelings for the main character of the ''Monogatari'' series, [[Koyomi Araragi]], with Hanazawa portraying Nadeko's "maiden heart" with a "clear, whisper vocal" against a light brass section, single-note guitar, and a glockenspiel.<ref name="kaiyou 2024-07-25"/> The chorus opens with the Japanese onomatopoeia {{nihongo|{{transl|ja|fuwa-fuwari}}|ふわふわり}}, which means "fluffy" and is used to describe "cute, upbeat, or insubstantial things."<ref name="ann 2017-03-16" /> The song also contains a wordplay about Nadeko's name and {{transl|ja|[[yamato nadeshiko]]}} in the line {{nihongo|"I will try without the 'shi' &mdash; I mean, I will try if it would cost my life!"|「し」抜きで いや 死ぬ気で！|"shi" nuki de, iya, shinuki de!}}<ref name="famitsu 2022-06-19" />

Since the release of "Renai Circulation", Nadeko's subsequent character songs have made references to the former. "Mousou Express" was released for the 2013 anime series ''Monogatari: Second Season'', which adapted ''Otorimonogatari'' and was used as the opening theme song to the "Nadeko Medusa" story arc.<ref name="kaiyou 2024-07-25">{{cite web | url=https://kai-you.net/article/90135 | title=『撫物語』千石撫子の新キャラソン「caramel ribbon cursetard」考察　セルフサンプリングで表現する歴史と成長 | trans-title=A study of "Caramel Ribbon Cursetard", a new character song by Nadeko Sengoku from ''Nademonogatari'': the history of self-sampling and character growth | language=ja | work=Kai-You | date=2024-07-25 | accessdate=2024-07-29}}</ref> The song depicted Nadeko's descent into madness about her unrequited feelings for Koyomi Araragi and was seen as a response to "Renai Circulation."<ref name="kaiyou 2024-07-25"/> "Caramel Ribbon Cursetard", a duet between Nadeko and Yotsugi Ononoki (voiced by [[Saori Hayami]]) released for the 2024 anime adaptation of ''Nademonogatari'', is also presented with rapping verses, with the lyrics having Nadeko face her past self in "Renai Circulation" and "Mousou Express."<ref name="kaiyou 2024-07-25"/>

==Reception==

''[[Famitsu]]'' stated that "Renai Cirulation" suited Nadeko's cute image "perfectly."<ref name="famitsu 2022-06-19"/> They also describe Hanazawa to have an "airy" and "cute" singing voice that they found "charming."<ref name="famitsu 2022-06-19"/> [[Anime News Network]] described the song as "cutesy as all get-out" and that it framed Nadeko as "cute and dramatically vacuous", making her a cliché {{transl|ja|[[Moe (slang)|moe]]}} character.<ref name="ann 2017-03-18">{{cite web | first=Nick | last=Creamer | url=https://www.animenewsnetwork.com/review/bakemonogatari/episode-9/.113374 | title=''Bakemonogatari'': Episode 9 | work=[[Anime News Network]] | date=2017-03-18 | accessdate=2023-08-01 | archive-date=February 16, 2023 | archive-url=https://web.archive.org/web/20230216071653/https://www.animenewsnetwork.com/review/bakemonogatari/episode-9/.113374 | url-status=live }}</ref> ''Kai You'' stated that the rapping in the song was not skilled compared to hip hop songs, but it benefited in making the song "cute" due to how it portrayed Nadeko's clumsy character.<ref name="kaiyou 2024-07-25"/> In 2019, "Renai Circulation" won the Character Song Award at the Heisei Anisong Grand Prix for the decade of 2000 to 2009.<ref>{{cite web | first=Lynzee | last=Loveridge | url=https://www.animenewsnetwork.com/interest/2019-03-04/heisei-anisong-grand-prize-winners-2000-2009/.144172 | title=Heisei Anisong Grand Prize Winners: 2000-2009 | work=[[Anime News Network]] | date=2019-03-04 | accessdate=2023-08-01 | archive-date=June 10, 2023 | archive-url=https://web.archive.org/web/20230610152627/https://www.animenewsnetwork.com/interest/2019-03-04/heisei-anisong-grand-prize-winners-2000-2009/.144172 | url-status=live }}</ref>

==Live performances==

In 2015, Hanazawa performed "Renai Circulation" as an encore song for her "Live 2015 Blue Avenue" concert tour.<ref name="dengeki 2015-05-05">{{cite web | url=https://dengekionline.com/elem/000/001/048/1048248/ | title=花澤香菜さん初となる日本武道館ライヴをレポート。アンコールでは神曲『恋愛サーキュレーション』も！ | trans-title=Report of Kana Hanazawa's first live show at the Nippon Budokan. The encore even has the legendary song "Renai Circulation"! | language=ja | work=[[Dengeki]] | date=2015-05-05 | accessdate=2023-08-01 | archive-date=September 3, 2023 | archive-url=https://web.archive.org/web/20230903185725/https://dengekionline.com/elem/000/001/048/1048248/ | url-status=live }}</ref> After "Renai Circulation" went viral on [[TikTok]] in China, Hanazawa was invited to perform the song as a special guest at the 2019 BTV Universal New Year's Eve Snow and Ice Song Festival in Beijing, China.<ref>{{cite web | url=https://natalie.mu/music/news/313885 | title=花澤香菜、在日ファンクとのタッグで大好きな「パン」を歌う | language=ja | work=[[Natalie (website)|Natalie]] | date=2018-12-26 | accessdate=2023-08-01 | archive-date=August 21, 2022 | archive-url=https://web.archive.org/web/20220821024945/https://natalie.mu/music/news/313885 | url-status=live }}</ref><ref name="animeanime 2019-04-17">{{cite web | url=https://animeanime.jp/article/2019/04/17/44938.html | title=花澤香菜、自身初"海外公演"を中国にて！TikTokで人気沸騰中の「恋愛サーキュレーション」など披露 | trans-title=Kana Hanazawa holds "first overseas performance" in China; shows off "Renai Circulation", a popular song on TikTok | language=ja | work=Anime! Anime! | date=2019-04-17 | accessdate=2023-08-01 | archive-date=April 4, 2023 | archive-url=https://web.archive.org/web/20230404153400/https://animeanime.jp/article/2019/04/17/44938.html | url-status=live }}</ref><ref>{{cite web | url=https://www.oricon.co.jp/news/2155714/full/ | title=花澤香菜の写真集3・16発売 30歳節目に「かなり攻めた」透け感ワンピース | trans-title=Kana Hanazawa releases photobook on March 16, celebrating her 30th birthday wearing a "pretty aggressive" sheer one-piece dress | language=ja | work=[[Oricon]] | date=2020-02-19 | accessdate=2023-08-01 | archive-date=December 20, 2022 | archive-url=https://web.archive.org/web/20221220170333/https://www.oricon.co.jp/news/2155714/full/ | url-status=live }}</ref> She later performed the song again in 2019 during a concert in Shanghai.<ref name="animeanime 2019-04-17"/> In May, Hanazawa performed the song at ''Monogatari'' Fes: 10th Anniversary Story, a talk event celebrating the 10-year anniversary of the ''Monogatari'' anime adaptation.<ref>{{cite web | url=https://www.oricon.co.jp/news/2135390/full/ | title=『＜物語＞フェス』にキャスト集結 “一夜限り”のスペシャルステージで魅了 | trans-title=''Monogatari Fes'': cast gathering that charms with an "all night" special stage | language=ja | work=[[Oricon]] | date=2019-05-13 | accessdate=2023-08-01}}</ref>

In 2022, Hanazawa performed "Renai Circulation" on her "Live 2022 Blossom" concert tour.<ref name="crunchyroll 2022-09-04">{{cite web | first=Mikikazu | last=Komatsu | url=https://www.crunchyroll.com/news/latest/2022/9/4/watch-kana-hanazawas-new-concert-blu-ray-live-2022-blossom-digest | title=Watch Kana Hanazawa's New Concert Blu-ray "Live 2022 blossom" Digest | work=[[Crunchyroll]] | date=2022-09-04 | accessdate=2023-08-01 | archive-date=September 3, 2023 | archive-url=https://web.archive.org/web/20230903185728/https://www.crunchyroll.com/news/latest/2022/9/4/watch-kana-hanazawas-new-concert-blu-ray-live-2022-blossom-digest | url-status=live }}</ref> She also performed it at [[Animelo Summer Live]] 2022.<ref name="mantan 2022-08-28">{{cite web | url=https://mantan-web.jp/article/20220828dog00m200036000c.html | title=アニサマ2022：花澤香菜が11年ぶり出演 名曲「恋愛サーキュレーション」披露 | trans-title=Animelo Summer 2022: Kana Hanazawa makes first appearance in 11 years, shows off popular song "Renai Circulation" | language=ja | work=Mantan Web | date=2022-08-28 | accessdate=2023-08-01 | archive-date=September 8, 2022 | archive-url=https://web.archive.org/web/20220908111950/https://mantan-web.jp/article/20220828dog00m200036000c.html | url-status=live }}</ref> In October, Hanazawa performed the song at the Dream Entertainment Live, an event celebrating the 55th anniversary of [[All Night Nippon]].<ref>{{cite web | url=https://www.oricon.co.jp/news/2254993/full/ | title=佐久間P『ドリエンライブ』横アリ一帯“チュロ景色” 豪華メンバーと「日本一大きなラジオオフ会」 | trans-title=Producer Sakuma's "Dream Entertainment Live" at Yokohama Arena: in the "churro scenery" area with a gorgeous group of members at "Japan's largest radio meetup" | language=ja | work=[[Oricon]] | date=2022-10-29 | accessdate=2023-08-01 | archive-date=July 29, 2024 | archive-url=https://web.archive.org/web/20240729232540/https://www.oricon.co.jp/news/2254993/full/ | url-status=live }}</ref> In 2023, she performed the song at the Tencent Music Entertainment Awards as part of a medley of her other anime songs.<ref>{{cite web | url=https://news.ponycanyon.co.jp/2023/07/87385 | title=マカオで開催されたフェス『TMEA』に花澤香菜が出演！ライブスチール到着！ | trans-title=Kana Hanazawa makes an appearance at TMEA, a festival opening in Macao! Here's a photo still of her live performance! | language=ja | work=[[Pony Canyon]] | date=2023-07-13 | accessdate=2023-09-03 | archive-date=September 3, 2023 | archive-url=https://web.archive.org/web/20230903185756/https://news.ponycanyon.co.jp/2023/07/87385 | url-status=live }}</ref>

==Cultural impact==

After the song's initial release, in 2010, "Renai Circulation" became popular among anime fans, inspiring [[cover dance]]s with original choreography and song mash-ups on [[Niconico]].<ref name="jcast 2021-05-05"/> Nadeko won first place in a ''Bakemonogatari'' character poll held by anime merchandise retailer [[Toranoana]], with some voters citing "Renai Circulation" as the reason.<ref>{{cite web | url=https://ascii.jp/elem/000/000/493/493032/ | title=化物語キャラクター人気投票結果発表 第1位は撫子「カワイスギル…罪」 | trans-title=Results for ''Bakemonogatari'' character popularity poll released, Nadeko wins first place, "She's too cute... what a sin" | language=ja | work=[[ASCII Media Works]] | date=2010-01-26 | accessdate=2023-08-01 | archive-date=June 15, 2017 | archive-url=https://web.archive.org/web/20170615050900/http://ascii.jp/elem/000/000/493/493032/ | url-status=live }}</ref> In 2022, Hanazawa stated that the success of "Renai Circulation" led her to receiving more offers to perform character songs as well as a singing career.<ref>{{cite web | url=https://natalie.mu/music/pp/hanazawakana14 | title=花澤香菜「blossom」インタビュー ソロデビューから10年、"再出発"をテーマに掲げたニューアルバム完成 | trans-title=Interview with Kana Hanazawa about her album ''Blossom'': 10 years since her solo debut, a new album with the theme of "restart" has been completed | language=ja | work=[[Natalie (website)|Natalie]] | date=2022-02-25 | accessdate=2023-08-01 | archive-date=March 20, 2022 | archive-url=https://web.archive.org/web/20220320034305/https://natalie.mu/music/pp/hanazawakana14 | url-status=live }}</ref> She also stated that the song has helped her "get to know [her] voice."<ref name="mantan 2022-08-28"/>

In 2018, "Renai Circulation" went viral on [[TikTok]] in China.<ref name="animeanime 2019-04-17"/> On December 18, 2019, Chinese electronics company [[Xiaomi]] posted a parody version of the song video on [[Bilibili]] about their Q3 financial report using processed voice clips from their CEO, [[Lei Jun]].<ref name="jcast 2021-05-05"/><ref>{{cite web | url=https://pc.watch.impress.co.jp/docs/news/yajiuma/1225457.html | title=マジか!? Xiaomiが第3四半期決算をアニソン「恋愛サーキュレーション」に乗せてお届け | trans-title=Is this for real?! Xiaomi presents third quarterly financial report through anime song "Renai Circulation" | language=ja | work=PC Watch | publisher={{ill|Impress (company)|lt=Impress|ja|インプレス}} | date=2019-12-19 | accessdate=2023-08-01 | archive-date=November 27, 2022 | archive-url=https://web.archive.org/web/20221127132048/https://pc.watch.impress.co.jp/docs/news/yajiuma/1225457.html | url-status=live }}</ref> In 2021, "Renai Circulation" spread outside of Asia on TikTok as well through a 2012 English-language cover version by American singer Lizz Robinett.<ref name="jcast 2021-05-05"/> Robinett's version inspired cover dances on the app and became an [[Internet meme]].<ref name="billboard 2021-04-02"/> Her version of the song also saw popularity with Japanese users who were unfamiliar with the song.<ref name="jcast 2021-05-05"/><ref>{{cite web | url=https://natalie.mu/music/news/435388 | title=Perfumeが踊る「恋愛サーキュレーション」公開 | trans-title=[[Perfume (Japanese band)|Perfume]] releases video of them dancing to "Renai Circulation" | language=ja | work=[[Natalie (website)|Natalie]] | date=2021-07-03 | accessdate=2023-08-01 | archive-date=July 13, 2021 | archive-url=https://web.archive.org/web/20210713050050/https://natalie.mu/music/news/435388 | url-status=live }}</ref> "Renai Circulation" was described by [[Natalie (website)|Natalie]] as an example of a [[J-pop]] song finding a global audience.<ref>{{cite web | first=Shohei | last=Hashimoto | url=https://natalie.mu/music/column/528774 | title=「Gacha Pop」はJ-POPに代わる新ジャンルになるのか？ | trans-title=Will "Gacha pop" become a new genre that will replace J-pop? | language=ja | work=[[Natalie (website)|Natalie]] | date=2023-06-15 | accessdate=2023-08-01 | archive-date=June 22, 2023 | archive-url=https://web.archive.org/web/20230622001534/https://natalie.mu/music/column/528774 | url-status=live }}</ref>

The song "Tokyo Mauve" by [[Polkadot Stingray]] was inspired by Hanazawa, with the composition resembling "Renai Circulation."<ref>{{cite web | first=Akira | last=Narimatsu | url=https://natalie.mu/music/pp/hanazawakana13 | title=花澤香菜×雫 インタビュー 相思相愛なコラボ曲「SHINOBI-NAI」はどうやって生まれた？ | trans-title=Interview with Kana Hanazawa and Shizuku: how did the mutual collaboration song "Shinobi-Nai" come about? | language=ja | work=[[Natalie (website)|Natalie]] | date=2021-12-14 | accessdate=2023-08-01 | archive-date=February 9, 2023 | archive-url=https://web.archive.org/web/20230209065812/https://natalie.mu/music/pp/hanazawakana13 | url-status=live }}</ref> In 2022, "Renai Circulation" was used as an ending theme song to the child-rearing program ''{{ill|Sukusuku Ko Sodate|ja|すくすく子育て}}'' on [[NHK Educational TV]].<ref name="famitsu 2022-06-19"/>

===Cover versions===

In 2010, Japanese singer {{ill|Mai Kotone|ja|小桃音まい}} recorded a cover version for ''Anime Dance Best Gig'', a [[compilation album]] featuring covers of popular anime songs.<ref>{{cite web | url=https://natalie.mu/music/news/30732 | title=ハルヒから千石撫子まで、アニヲタ歓喜のカバーコンピ | trans-title=From [[Haruhi Suzumiya|Haruhi]] to Nadeko Sengoku, a cover compilation that will make anime fans rejoice | language=ja | work=[[Natalie (website)|Natalie]] | date=2010-04-19 | accessdate=2023-08-01 | archive-date=April 7, 2016 | archive-url=https://web.archive.org/web/20160407120541/http://natalie.mu/music/news/30732 | url-status=live }}</ref> Kotone also performed the song during a concert celebrating her 24th birthday in 2014.<ref>{{cite web | url=https://www.oricon.co.jp/news/2041392/full/ | title=小桃音まい、24歳のバースデーライブ! 初披露の新曲はDIANNA☆SWEETメンバーとのユニット | trans-title=Mai Kotone holds live show on her 24th birthday! New song performed with Dianna Sweet members as a unit is unveiled | language=ja | work=[[Oricon]] | date=2014-08-26 | accessdate=2023-08-01 | archive-date=September 3, 2023 | archive-url=https://web.archive.org/web/20230903185729/https://www.oricon.co.jp/news/2041392/full/ | url-status=live }}</ref> In 2012, American singer Lizz Robinett recorded an English-language cover,<ref name="jcast 2021-05-05"/> which later spread outside of Asia on TikTok.<ref name="billboard 2021-04-02">{{cite web | url=https://www.billboard-japan.com/d_news/detail/98633/2 | title=【TikTok週間楽曲ランキング】Lizz Robinett歌う「恋愛サーキュレーション」英語カバーが首位 | trans-title=(TikTok Weekly Song Ranking) English cover of "Renai Circulation" sung by Lizz Robinett tops chart | language=ja | work=[[Billboard Japan]] | date=2021-04-02 | accessdate=2023-08-01 | archive-date=August 2, 2023 | archive-url=https://web.archive.org/web/20230802033328/https://www.billboard-japan.com/d_news/detail/98633/2 | url-status=live }}</ref> Robinett's version ranked no. 1 in the ''[[Billboard Japan]]'' TikTok Weekly Top 20 in the week of March 22, 2021.<ref name="billboard 2021-04-02"/> In 2013, Japanese singer [[Nagi Yanagi]] recorded a cover version as a first press bonus for her album ''Euaru''.<ref>{{cite web | first=Akira | last=Narimatsu | url=https://natalie.mu/music/pp/yanaginagi06 | title=やなぎなぎ「エウアル」インタビュー | trans-title=Interview with Nagi Yanagi about ''Euaru'' | language=ja | work=[[Natalie (website)|Natalie]] | date=2013-06-28 | accessdate=2023-08-01 | archive-date=October 23, 2022 | archive-url=https://web.archive.org/web/20221023133629/https://natalie.mu/music/pp/yanaginagi06 | url-status=live }}</ref> In 2020, a Chinese-language cover version was recorded and performed on the [[reality competition]] program ''[[Youth With You (season 2)|Youth With You]]''.<ref name="jcast 2021-05-05"/> In 2022, a cover version performed by Hotaru Shiragiku (voiced by [[Satomi Amano]]) became available as a playable song in the mobile game ''[[The Idolmaster Cinderella Girls: Starlight Stage]]''.<ref>{{cite magazine | url=https://www.famitsu.com/news/202206/23266167.html | title=『デレステ』白菊ほたるの『恋愛サーキュレーション』、一ノ瀬志希による『Alchemy』が実装決定！ アニソン名曲カバー特集が近日開始 | trans-title="Renai Circulation" performed by Hotaru Shiragiku and "Alchemy" performed by Shiki Ichinose are announced to be implemented on ''The Idolmaster Cinderella Girls: Starlight Stage''! Covers of popular anime songs soon to be featured | language=ja | magazine=[[Famitsu]] | date=2022-06-23 | accessdate=2023-08-01 | archive-date=June 23, 2022 | archive-url=https://web.archive.org/web/20220623234009/https://www.famitsu.com/news/202206/23266167.html | url-status=live }}</ref> [[The Resonanz Children's Choir]] performed the song live with the Jakarta Concert Orchestra, during an Anime Symphony concert.<ref name="AnSym">{{Cite news |date=December 10, 2023 |title=Jakarta Concert Orchestra Sukses Gelar Konser Anime Perdana 'An Anime Symphony' |url=https://www.liputan6.com/citizen6/read/5477303/jakarta-concert-orchestra-sukses-gelar-konser-anime-perdana-an-anime-symphony |access-date=May 16, 2024 |work=Liputan 6 |archive-date=May 16, 2024 |archive-url=https://web.archive.org/web/20240516150417/https://www.liputan6.com/citizen6/read/5477303/jakarta-concert-orchestra-sukses-gelar-konser-anime-perdana-an-anime-symphony |url-status=live }}</ref>

==Notes==
{{notelist}}

==References==
{{Reflist}}

{{Monogatari}}
[[Category:2009 songs]]
[[Category:Animated series theme songs]]
[[Category:Anime songs]]
[[Category:Songs in Japanese]]
[[Category:Internet memes introduced in 2010]]
[[Category:Monogatari (series)]]