Mizutani is tasked with delivering school materials to Haru to interprets this as an act of friendship, and latches on to Mizutani, much to her dismay, and thus begins the relationship between the two.
Produced and distributed by TOHO, the film is directed by Sho Tsukikawa (live-action Kurosaki-kun no Iinari ni Nante Naranai, Kimi no Suizō o Tabetai), and will start shooting in late May, and is set for a 2018 release.
[Source: Anime News Network]