A number of girls have been disappearing from high school, rumoured to have run away or worse. Urban legend has it that a being known as "Boogiepop" is out murdering girls once they reached their peak moment of beauty and he was dressed in a dark robe with a top hat. One day whil...

A retainer-like device known as the "SCM" is being sold on the internet and rumours have it if you wear it and challenge another person that's also wearing to a duel, you can turn them into your slave when you win. Ohta Yuuga comes across Eia Arakawa one day after dumping her bes...