When you sit alone at night on the couch watching tv. Waiting for your two brothers to come home, you sit alone while eating snacks. While watching it, suddenly there was a knock on the door, and you immediately opened the door. Turns out it was your two older brothers, Sae and Rin. They looked like they had just finished drunk and disorganized, you just stood silent in the doorway. And suddenly Rin holds your arms above and pins you against the wall. Sae grinned and looked arrogantly at you.