Itsudatte Bokura no Koi wa 10 cm Datta.

Miou Aida and Haruki Serizawa meet during the Sakuragaoka High School entrance ceremony and immediately sense a strong, inexplicable bond. Despite their contrasting personalities, they begin walking home together daily after school. As they spend more time together, their mutual affection deepens. Though close in proximity, a lingering distance of ten centimeters symbolizes the emotional space that remains between them.