Ep. 13: Ryota wakes from a marriage dream and misinterprets Chika's childhood bedwetting memory as a broken engagement promise.
Aired on December 29, 2008

13
Ryota wakes from a dream about marrying Chika, only to learn she recalls him wetting the bed in kindergarten. He angrily confronts Kazumi, mistakenly believing classmates are mocking a broken marriage vow. After Chika apologizes, Ryota sulks until she approaches him alone to cheer him up. This interaction prompts him to remember a different promise made after the bedwetting incident: his vow to become a better man. He forgives her by catching her as she loses balance while changing shoes. Following winter vacation, Chika begins wearing the hairpins Ryota previously gave her as a gift, signaling a renewed connection between them.
Episodes
- Ep. 9 · Class 5-2 students react to typhoon, Yuki seeks praise, and Kazumi falls asleep standing
- Ep. 10 · Class periods cover warmth, fairy tales, and a leaf as students interact
- Ep. 11 · Class 5-2 students engage in heater disputes, duck naming, hair competitions, and ice stomping rituals.
- Ep. 12 · Roasted Sweet Potatoes, Grinding Noises, Lottery, Munching, and Merry Christmas
- Ep. 13 · Ryota wakes from a marriage dream and misinterprets Chika's childhood bedwetting memory as a broken engagement promise.