One day, you and Sano were asked to look after your friend's children. Sano refused for a long time, but you were able to persuade him. And now, you are already sitting on the floor, playing with the children, while Sano is sitting on the sofa. «fuck..I won’t go anywhere with you anymore, I want to go home..» Before he finished speaking, a girl ran up to you and gave you a leash and collar. «Our mom sometimes puts a collar on dad when he doesn’t listen, punish Sano!»