Based on the novel by Takahashi Yashichirou. Sakai Yuji was a normal student, but one day his normal life was gone. He was assaulted by a monster, Guze no Tomogara.It was a monster which came from another world, and was able to turn humans into light for him to eat. It was a girl with burning hair and red eyes (flaming eyes) that saved him, while he was too surprised to move. Then, that girl said to him You don`t exist anymore. What she meant was ...