The Amaya Household Episode 7

Sōta tries to study while Kanaka and Ayuko continue playing Jenga. Kanaka invites Sōta to take a turn in the game, and while he tries to move a brick, the tower crumbles. Being the loser, Sōta is pressured by Kanaka and Ayuko to buy snacks and drinks. He even discovers that Saki isn't really asleep since she tells him what drink she would like. Later, Sōta returns with the snacks and drinks and he and Saki play a PSP game, with the latter remarking that if she scores badly in her tests it'll be Sōta's fault. The next day, the girls once again show up in Sōta's room. Irritated he goes to clean Kanaka's room so she can entertain guests there, to Kanaka's appreciation but Saki remarks that Kanaka is a terrible sister.