Read The 100 Girlfriends Who Really, Really, Really, Really, Really Love You manga
Aijou experienced 100 heartbreaks during Junior High. While praying in a shrine, the God of Love appears, saying that Aijou will meet 100 fated girls. If their relationship with him fails, all the girls will face an accident and die. Now it’s a matter of love or death, and it’s up to Aijou to decide.