This two-volume manga is a prototype for the "'Wolf Guy Series" novels, especially the first two entitled "Ookami no Monshou" (狼の紋章) and "Ookami no Enka" (狼の怨歌).

A regular high school girl loses her way en route to a friend’s birthday party, only to stumble into a twisted realm where wishes are granted through bloodshed. Her escape becomes a surreal nightmare: endless...

Michiru Kita is a weak-spirited girl who has a hard time saying what’s on her mind. One day, she notices mysterious, ring-like markings around the necks of two of her classmates, Chika Akatsuki and Shito...