Kokoro Button (Japanese: ココロ・ボタン, lit.
"Heart Button") is a Japanese shōjo manga series written and illustrated by Maki Usami.
It was serialized in Shogakukan's Betsucomi magazine from the June 2009 issue (released on May 13) to the December 2013 issue (released on November 13).
[1][6] In 2016, the Japanese video distribution service dTV adapted Kokoro Button into a "movie comic", a series of videos containing animated panels from the manga with music and voice acting.
The roles of Niina Kasuga and Eito Koga were played by Yoshino Aoyama and Shunichi Toki, respectively.