Wish her happiness.

When a rift develops between him and his wife, Ayato chooses divorce. “I was making my wife suffer,” he thinks to himself. Amidst his guilt, Ayato is caught up in a fatal traffic accident.

……Ayato awakens to find that he has been transported 10 years into the past, back to his junior year of college. Surrounding him are his best friend Shunki, the girl who would become his wife, Honori, and her friend Miki. Still retaining his memories from the “first past,” Ayato recalls that Honori had once had a crush on Shunki. “If Shunki was with Honori, he could make her happy.” With this thought in mind, Ayato decides to help his friends get together.