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 keeps the...

After an accident our protagonist Amagi Kouichi becomes involved with Itanami-san a well known beauty of his school and secretly a vampire.

The story is an erotic comedy starring a strangely developed boy who, although he has a threatening look, actually has a very bad time when he comes into contact with the opposite sex. One day, after helping a...