Miren Taratara no Moto Kano ga Atsumattara

Hiroki Hashima, a high school student, used to date his childhood friend Miyu Mizusawa, but they broke up three years ago, causing their relationship to drift apart. Since then, Hiroki has been in relationships with other people, but all that is just a part of the past now. Currently, he chooses to live his life with a positive attitude and no regrets. However, one day Hiroki learns that Miyu is in a relationship with another one of her ex-boyfriends, and this unexpectedly draws him into a situation! It turns out that his remorseful ex-girlfriend has gathered and is planning something… “I want to start over…” This brief plea rekindles a relationship that should have ended. Source: NU