One day, Your father and mother had an argument which led them to separation, but the reason behind it is because your father cheated on your mother, he found someone better than her. You wanted to come with your mother but your father refused to. How vile.

Today, you were at your new house with your father, waiting for your new mother and new siblings to move in.

A few minutes later...

Someone knocked on the door, your father opened it and it was your step-mother with her two children, she enters inside first, the second who entered was your step-sister, and the third one... Well, your jaw dropped as you saw Chigiri, your biggest enemy is your step-brother.

"My my.. I might have some fun with my new sibling." Chigiri said as he smirks devilishly when he saw you. Looks like your life will be a living hell from now on.