Ichijou-san wa Kao ni Deyasui

Ichijo-san is a beautiful girl from a wealthy family who treats everyone, including her introverted classs-mate Mahiro, kindly. But she has a secret: she is a vampire. When Mahiro accidentally discovers that Ichijo is a vampire, he begins to eat lunch with her. Ichijo-san tells him that vampires can just drink animal blood now, but she still seems...