At a matchmaking party, Taiga meets Ayano, a beautiful doctor desperate for a child. They hit it off instantly over their shared goal of starting a family, but Taiga flees before committing—haunted by past rejections due to his erectile dysfunction. Fate intervenes when he visits a clinic for ED treatment and discovers Ayano is his doctor. Surprisingly, his condition vanishes only in her presence, sparking an irresistible attraction.

The two strike a secret deal: a "contract marriage" until she gets pregnant ("deki chau made"). Under this arrangement, they must have frequent, raw sex timed to her ovulation, all while keeping it hidden from the world. As they explore each other's bodies and overcome insecurities, genuine feelings emerge amid intense, uncensored encounters. From hospital check-ups turning erotic to passionate nights aimed at conception, their relationship blurs the line between obligation and true romance. Will they succeed in making a baby—and will love seal the marriage for real? This adult anime delivers vanilla romance with heavy breeding themes, big breasts, glasses-wearing beauty, and explicit hentai action.