Rika Izumi will play Nanase Kashiwagi, Yuki Sasō will play Reina Yamada, and Tamaki Ogawa will play Yūko.
The film will open in Japan on December 14.
The official website for the live-action film of Anashin’s Waiting for Spring (Harumatsu Bokura) manga revealed the cast for three female characters around Mitsuki on Thursday.
Mizuki (sic) is a shy girl who’s about to enter high school, and vows to open herself up to new friendships.