Vlad Academy――a secret school where vampire girls spend their days. Aoi decides to transfer to the same school as her childhood friend, Yuna. However, right after enrolling, Aoi witnesses... girls drinking a blood toast deliciously. If it's discovered that Aoi, a human, is in a vampire school, it would be a disaster!! But without worrying about that, she makes friends and rivals! A cute and slightly mysterious slice-of-life school life unfolds between charming vampires and a human girl!