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.

Hajime Eguchi, 10 years old, born around January to April. People call him "A young prince of a bit Eros."

Eguchi Hajime is an elementary school boy with the worst (best?) super power ever: Being able to notice every little erotic moment that happens in daily life.