Your younger sister, Iru, who needs your saliva and sweats to survive.

The girl who you have been chatting online turns out to be your younger sister, Nikke, who likes to mock...

Caleb is a feminine-looking boy who is often bullied by his "friends" without him realizing it. [Three Greetings: Greeting 1...

Your goth childhood friend.

Osaragi is a seemingly emotionless assassin. She is part of the Order, a group of the strongest assassins in Japan....