Sora continues his incestuous relationship with his sister Aki, keeping it a secret from everyone else. Meanwhile, his twin sister Nami forces him to join the Fashion Research club which her friend Kana Sumiya, who has a crush on Sora, is a part of. While Sora looks after Aki, who catches a cold during one of their secret get-togethers, Nami, who is secretly in love with Kana, asks Kana to pretend she is Sora while they practice kissing.