Actually, I Am...

Asahi Kuromine is a high schooler with a reputation for being unable to keep secrets. One day, he catches his crush, Yoko Shiragami, revealing a pair of enormous wings on her back. She confesses she’s a vampire and can only stay at their school if no one learns the truth. Asahi promises to protect her secret, but it’s easier said than done-Yoko is hopelessly clumsy, and his friend Mikan keeps teasing them both.