The focus of the episode is on Gakuto, the youngest of the Yuzuki brothers, a six-year-old first-grader in elementary school. After school, Gakuto often visits the Kirishima family's house, where he enjoys spending time with Waka, a friend from kindergarten. Although he is the youngest, Gakuto feels a certain impatience and wishes he could help his older brothers, especially Hayato, who is studying and working as a teacher.

Gakuto notices that Mr. Kirishima, the elderly neighbor, has been observing him and his brothers lately. This observation is confirmed when Hayato and Minato also mention that they have felt Mr. Kirishima's gaze on them. The brothers suspect that Mr. Kirishima might be worried because they lack parental guidance.

One day, Gakuto waits outside the house for Hayato to return. Mr. Kirishima invites him inside and offers him apple juice. Together, they watch a historical drama, and Gakuto enjoys the experience. Mr. Kirishima, whose full name is Kojiro, explains that he has wanted to reach out to the Yuzuki brothers since they lost their parents. He even bought DVDs to start conversations with them.

Hayato eventually finds Gakuto at Mr. Kirishima's house and initially declines the offer for Gakuto to visit regularly. Later, however, he agrees, as he could use the help, especially since he is about to start his teaching internship. Gakuto is thrilled, not only because he can spend more time at Mr. Kirishima's house but also because he feels he has found his first best friend in Mr. Kirishima.

At the end of the episode, Gakuto reflects on how much he enjoys each day, especially now that he has two best friends: Mr. Kirishima and Waka from the Kirishima family.