When the alien Kiseichuu descend on Earth, they have one goal: eradicate the human race. They do so by feeding off the very passion that drives humans to reproduce, their H-Energy! Retto Enjo is recruited onto...

Momo is the younger sister of Lala, the alien princess who has long since been engaged to the human Rito. Although Rito’s heart continues to waver between Lala and his first crush, Haruna, Momo finds herself...