Douse, Koishite Shimaunda. 2nd Season

Mizuha is a second-year high school student who has a bad seventeenth birthday. She didn’t get a chance to get her crush, her parenst forget her birthday, and she got sicked by an unknown disease. She was feeling completely hopeless about her youth when her childhood friend, Mizuki, confessed to her. But the problem is that Mizuka see him as family, as she grew up with him and the other three childhood friends.