Raiha takes Futaro out shopping and invites Itsuki and Yotsuba to join them. Raiha mentions Rena, calling her Futaro’s "first crush". On the bus, Yotsuba learns that Miku made lunch for Futaro. The girls decide to play a card game. As a penalty, the losers must obey the winner. Once they arrive, the sisters follow behind Futaro's group up the mountain, and when the path splits, Yotsuba, having won the card game, orders Itsuki, Ichika, and Nino to go up one path, while she and Miku go up the other...