Yoru ni mo Makezu!

The adventures of the cute and energetic Niko Kanzaki in the semi-demonic prestigious school, St. Lunatic School. First having entered due to her brother getting a job there, Niko discovers the haunting secret of the school in her night-classes, which are overrun with demons! She learns differences between humans and demons, but the handsome and mysterious Ren shows her that their two races may share some things in common.