The episode serves as the season finale and begins with Kyoko Hori being woken up by her mother to go to school. Miyamura is already at home, waiting to take her to school. Kyoko is running late because she watched a horror series. Miyamura helps her get ready and even puts her hair up in an updo, which she initially doesn’t like but eventually warms up to.

At school, the student council is busy organizing papers and cleaning up the room. Sengoku, the president, is worried about the dust attacking his colleagues Yoshikawa and Iura. Yanagi, a new character, helps with the heavy lifting, leading to a humorous discussion about the "muscle and strength ranking" among the students.

Kyoko and Miyamura talk about chance and fate, wondering how their lives would have turned out if even a single event had gone differently. This conversation sets the tone for the subsequent graduation ceremony, where the students reflect on their high school experiences.

After the graduation ceremony, the Hori family invites Miyamura out for sushi. Kyoko reveals that she cut her hair short and that Miyamura should be the first to see it. Miyamura also considers getting a haircut, leading to a playful exchange between the two.

The episode ends on a heartwarming note, emphasizing how much Kyoko and Miyamura have grown closer and how they continue to experience new things together.