Necessary Evil Kiroki Mui, a pitiful girl who's almost jump off the cliff and found herself in an unknown room. That's also when she met Yuri Ryoba. That's when she realizes that she in the girl house. Kiroki Mui became close to her since then. She became too comfortable with her that she spill her story. Yuri Ryoba make a promise with her that she'll become the change of her life. Yuri Ryoba is known as a devil and a cruel villainess. Will her life change? Or will it'd be the same?

• School