An older brother brings his girlfriend home. Her name is Aika and she's cute and has big breasts. Shota witnesses them getting cozy in the room and is filled with Kokoro and jealousy, saying, "She's too good for you! I want to touch her breasts too!" He says it's a punishment game for playing cards, so he touches her boobs and plays with her with toys under the table, doing whatever he wants. He takes a bath with her and rubs her huge, bubble-covered boobs, making full use of his child privileges. He even plays a prank on the juice she brings him and sneaks into her room while she's asleep...