Koikimo (2021)

On a rainy day, salaryman Amakusa Ryo finds himself rescued by an unknown high school girl at the station, later discovering her name is Arima Ichika. Known for his flirtatious nature, Ryo attempts to repay her with a kiss or a date, only to be met with Ichika's blunt rejection, calling him creepy. Undeterred, Ryo becomes infatuated with her and begins to unabashedly pursue her affection. Despite Ichika's constant teasing and insults about his behavior, Ryo interprets her responses as playful banter, leading to a quirky and tumultuous romance between them.