Fortune Arterial: Akai Yakusoku

Kohei Hasekura transfers to a prestigious public academy modeled after an English-style six-year school that combines junior high and high school. Set on Tamatsu Island just off mainland Japan, the campus is reachable only by boat, giving everyday school life a secluded, insular feel.

Not long after arriving, Kohei stumbles upon an unexpected secret: Erika Sendo, a student in the class next to his, is actually a kind of vampire. As he adjusts to his new environment, the discovery draws him into a mix of school comedy, romance, and the supernatural.