Koizora

Mika Tahara (Yui Aragaki) is a freshman high school student who starts texting a mysterious boy, Hiro (Haruma Miura), a delinquent who is initially intimidating. However, Hiro reveals himself to Mika and shows proof of his identity, and the two start a romantic relationship. As their relationship deepens, Mika learns about Hiro's troubled past, including his ex-girlfriend Saki (Asami Usuda), who becomes increasingly hostile towards Mika. The film follows Mika and Hiro's on-again, off-again relationship, including their experiences with love, loss, and illness, as they face challenges and ultimately find happiness together.