Black and white adult graphic novel. "Erotic Grotesque" style Japanese Manga. (Labeled: "Graphic Novel/Erotic/Horror/Manga"; "ABSOLUTELY NOT FOR CHILDREN").

Similar to the Maeda's Demon Invasion books. This series was turned into a Japanese animation film.

A female university student, Miko, has a secret, she is a ninja trained defender of the earth from demon invaders who tend to be a little over endowed with tentacles and have a tendency to overpower their victims with sex. Miko is helped in her fight by a small ninja named Nin Nin, memories of her late grandmother Momo, and somewhat hindered by her sister Miyu, who runs an adult film company and sometimes tricks/traps her sister into participating in her films. A female professor, Shiratori, and female classmate, Mako, round out the main characters.

This strange book is filled with rape, aliens, violence, and includes a visit to a demon dimension.