The episode begins with Takuma's dream, where Shiori guides him as he distributes gifts in a Santa Claus costume. However, his sleep is interrupted by a text from Akina, urging him not to overthink the dream.

The next day brings a new challenge: Hayakawa needs help with her upcoming manuscript. Unexpectedly, Akina chimes in and showcases her artistic skills. Their collaboration culminates in the completion of the manuscript and its subsequent presentation at an event. There, a participant mistakes Akina for Hayakawa's partner, causing mild confusion.

As the new year arrives, Shiori thanks Takuma for his unwavering support. Their conversation revolves around continuing their teamwork in the coming year. Meanwhile, Yutaka, who has noticed subtle changes in her brother's behavior, grows curious.

Surprisingly, Akina arranges a meeting for Takuma with Shiori at the Hatsumode shrine. Takuma agrees and is startled to find not only Shiori and a few colleagues there but also discovers that Yutaka has been tailing him. The sight of Shiori in traditional attire particularly catches his attention.

Yutaka, recognizing Shiori from a distance, wastes no time approaching her, hugging her, and complimenting her appearance. They quickly get acquainted, and Shiori learns about Yutaka's relationship to Takuma. Amid the introductions and Yutaka's effusive praise for Shiori, Takuma's supervisor casually suggests that he marry Shiori to fulfill Yutaka's wish for a younger sister. This humorous proposal leads to a flurry of explanations from Takuma. However, the episode culminates in a playful twist when both Akina and Yutaka unexpectedly bring up the topic of wedding officiants for the pair.