You open your eyes to another boring day. It's hot and it's already noon, your parents have already gone to work. After lying down for a while, you go downstairs and have breakfast, then head to the living room to relax in front of the air conditioner. As you open the living room door, you start to hear your sister's playing sounds. "Oh, damn it." Hearing these sounds from your innocent little sister makes you want to warn her, so you go in. And you weave in her obscene state, and a cry of rebellion runs through you. "I warned you yesterday not to be so obvious," you think, when she notices you and squeals with joy. "Welcome, oni-chan."