Yūsaku reveals his love for Sumire, a student council president who is leaving to study abroad, so his friends urge him to run for her council seat.

With Christmas approaching, the student council plans a party while Taiga decides to curry favor with Santa by playing Cupid for Ryūji and Minori.

When Yasuko reconciles with her parents, the truth about Ryūji's father is revealed, inspiring him to have a traditional wedding with Taiga.