Mischievous Kiss - The Movie
Available on Crunchyroll
High school senior Kotoko is hopeless in academics and has had a crush on the school's most handsome and intelligent guy, Naoki, since freshman year. Though Kotoko gathers the courage to confess her love, Naoki bluntly rejects her in public. By a trick of fate, Kotoko's house collapses, and her father's childhood friend Mr. Irie invites Kotoko's family to stay in their home. Only for it to be revealed that Mr. Irie's son is Naoki!