As Halloween approaches, the girls decide to hold a small get-together. Nagi receives a strange plush doll from Run, which she has trouble identifying. While Run and Yūko attempt to make food for the party, with messy results, Tooru and Nagi go to buy some snacks, where they find a dirty manga with a heroine that looks like Yūko. After Run's failure at trying to make hotcakes from a mix, the girls decide to make some together from scratch.

As Winter settles in, Tooru finds an abandoned kitten and decides to take care of it. After showing the cat to the others, Tooru goes with Run to visit a pet shop and a family restaurant, where Run comes with a name for the cat, Tansan. The next day, snow falls at school and the students have fun playing in the snow, except for Nagi who is noticeably bothered by the cold. By the next day, however, everyone but Nagi catches colds.