"Renai Circulation"
(Japanese: 恋愛サーキュレーション, Hepburn: Ren'ai Sākyurēshon,
lit.
"Love Circulation")
is a song from the 2009 Japanese anime television series Bakemonogatari (the animated adaptation of the first book from the Monogatari series by Nisio Isin) and performed by Kana Hanazawa as her character, Nadeko Sengoku.