A live action film adaptation was released on September 19, 2015 with Mirei Kiritani and Kento Yamazaki starring as Hatori Matsuzaki and Rita Terasaka, respectively.

Hatori Matsuzaki is a colourful freshman high school student who has harboured a deep crush on her childhood friend, the aloof Rita Terasaka, for several years.

Hatori attempts several times to thwart the budding relationship between the two and eventually confesses her love to Rita, but is rejected.

She also meets Kosuke Hiromitsu, a playful womaniser who notices that Rita cares for Hatori and begins an off-hand relationship with her to irritate him, but eventually develops serious feelings for her.

Things become even more complicated when Hiromitsu starts working part-time with an upperclassman who develops feelings for him, causing Hatori to become bitter and jealous.

Hiromitsu grows increasingly exasperated with Hatori, and, unable to deal with her insecurity and involvement with Rita, breaks up with her.

Hatori, disappointed by Rita's sudden disinterest in her, resolves to stay single and forget about her previous relationships.