When 15-year-old Rihito falls in love, an ancient vampire who craves 18-year-old virgin blood must protect the teen's virginity at all costs.

Still recalling his last incarnation as a sorcerer, a young prince dedicates himself to studying magic. But being a 10-year-old royal has its challenges!

Follows Yuta who repeatedly drew and then erased Gridman in his notebook, which he vaguely remembers. Then he decided to confess his feelings to Rikka, and their life in such a peaceful world begins to crumble with a roar.