Ayu still can’t locate what she’s looking for, but Yuichi knows where he left Nayuki’s notes: at the school. When he goes retrieve them, he finds he’s not alone in the hallways - and the other person is armed.

Yuichi decides it’s time to make good on his promise to Shiori. The two friends enjoy a day of snowball fights and whack-a-mole, but Yuichi’s evening is marred by tragic revelations.

Grief-stricken Nayuki locks herself in her room and refuses to let anyone enter. Tragic memories concerning Ayu wash over Yuichi, causing him to wander into the woods during a snowstorm.