The Hanamiya girls decide to train Konomi to improve her physicality so she can tackle tougher problems. Konomi struggles to keep up with her peers, while Jun struggles to be friendly with her at school. Later, the girls head to a more rural area to do some bouldering with the infamous "Anti-Monkey Rock" that is difficult to climb. Konomi arrives way too early, and ends up beating a grey-haired girl in a puzzle game, impressing her. The Hanamiya girls hike to their destination, where they meet their unofficial mentor Jūzō Gotō and his daughter Kikuko, the same girl Konomi met earlier...