Spring Has Come (1990)

High school girls are the chrysalises who hide their "female" form under their school uniforms and wait for the time to hatch. They are sensitive, fragile, and the cruellest of creatures. The protagonist, Mizuki, is a third-year student at an all-girls school. She secretly has feelings for her classmate Terumi. When Terumi's boyfriend breaks up with her, Mizuki gently hugs her and comforts her as she cries... Mizuki's keen observation of the pseudo-romance between girls, combined with the natural acting of the girls in the cast, makes for a very realistic "picture book of high school girl life". The softly beautiful scenes of the two girls walking through a residential area in midsummer, wearing yukata at a fair, and on a Christmas night are as impressive as a painting.

Unfortunately the movie Spring Has Come is not yet available on HBO Max.