Yuki is a girl that used to be in class 3-A until she requested to transfer. Her best friend Nagisa Shiota was already in that class. However, her personality changed after a horrible event occurred. This was the reason she transferred. Karma Akabane, is a sadistic person, so what would happen if Yuki, started to affect him in some way. Would Yuki ever return back to her old ways? Or stay the way she is now?