The episode begins with Valentine's Day approaching, and Sawada is thinking about the color of the ribbon he should use to wrap Hori's gift. He turns to Miyamura, who tells him that Hori likes red and orange. Meanwhile, Hori is worrying about what to give Miyamura, as she believes her dessert-making skills aren't as good as his.

Later, Sawada visits the student council and asks Iura about his chocolate preferences, which causes confusion among the council members. Iura says he likes any kind of chocolate, and Sawada relays this to a girl who has a crush on Iura.

Hori is seen struggling to make chocolate at home. Her family members sample her creation and give mixed reviews. Kono reassures her that what matters is the effort and thought put into the gift. Hori is still worried but decides to go through with her plan.

On Valentine's Day, Sawada presents Hori with a beautifully wrapped gift and reveals that he consulted Miyamura about the ribbon color. Hori appreciates the effort and realizes that the day is about making loved ones happy.

Hori visits Miyamura at home to give him her homemade chocolate cake. Miyamura has also prepared a chocolate ganache for her. Both are initially nervous about the other's reaction but are relieved and happy when they find they enjoy each other's gifts. The episode ends with a sense of mutual appreciation and love between the two.

In a side story, Sawada finally receives the chocolate meant for Iura from the girl who has a crush on him. He also gives Hori a gift, clarifying that it's "friendship chocolate."