Fortune Arterial: Akai Yakusoku

After years of changing schools, Kohei Hasekura chooses an island boarding school in the hope of finally putting down roots. New friendships and student-council activities offer the steady life he has been missing.

That promise grows complicated when he discovers the vampire secret surrounding the Sendo family. His bond with the spirited Erika draws him into a conflict between her wish to live freely among friends and the demands of her blood.