Four teenage girls are abducted, kidnapped, and tortured. Designated by numbers on their skin with a hot iron, young girls are ranked in the evening....

There is a "school" that abducts and confines girls to re-educate them as sex slaves. Kyoko, a bad schoolgirl, was caught by a witch and turned into...

Miho is a high school girl who is kidnapped by a mysterious "school" and trained as a slave. She is left unsold at the auction and is saved by a man...

Kyoko was the only one who succeeded in escaping the "school", but an unknown virus was injected into her body that will kill her if left untreated....

It’s been a year since the “school” where captured schoolgirls were trained as sex slaves was destroyed. But a survivor, Arikawa, has planned...

The day of human auction has come at a dreadful “school” that has been reopened. Among the “products” on the stage, there is Yuuki, with a...