When the mantis-like aliens known as Kiseichuu descend on Earth, they have one goal: eradicate the human race. They do so by absorbing humans' H-energy–the sexual passion that fuels so many people and keep...

Itsuki Minamori has fallen asleep in class and dreams about a girl from his past. He is awakened by Haruna a girl who apparently has a crush on him, but her friend Chihaya Yuuki tells her to stay away from t...

Kojou Akatsuki lives on the artificial island of Itogami, and he has a secret: He's the "Fourth Primogenitor," the most powerful vampire in the world. He's carefully kept this dark knowledge from his family ...