Kinoko is good for your body. Teru Hayama shares anecdotes about her affectionate older sister Kou, and the peculiar methods she employs to care for Teru. Meanwhile, Sasame Tsuji sees an opportunity to get closer to Youko through an upcoming chorus recital. In "Koukyuu Wagyuu no Shishokukai," Youko, Futaba, and Hayama are stopped on their way home by Yuu Takezono, who implores Youko for help with his studies. A seemingly ordinary interaction with Yuu catches the attention of Sakura Usuda, who intervenes to regain his focus. On a different day, Mitsugu Yamaji expresses his concerns about Youko's job at Shino Sonobe's patisserie by recalling a Christmas incident with a former maid. During a cooking assignment, Futaba leads Hayama, Asako Kondou, and Serina Nishiyama in making cookies from scratch. However, Futaba's insatiable hunger for more snacks goes unfulfilled.