In a town blanketed by snow, a place from his distant childhood, Yuichi reconnects with his cousin Nayuki. As she gives him a tour of his new home, he struggles with memories long faded.

After his first day at school, Yuichi is able to stir the memories of Ayu, who happily recalls a promise he made to her years before. But the strange girl who later attacks Yuichi doesn’t seem happy at all.

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.

Makoto’s carelessness with a kitten causes Yuichi to lash out. Unfortunately, Makoto’s response to his anger is to run away. Later, Mai somehow directs him to her likely location.

Yuichi discovers Mai’s bad reputation; she has a history of being blamed any time something bad happens on campus. Hoping to help her fix her image, Yuichi invites her to the school dance.

Yuichi’s plan to salvage Mai’s reputation seems to be working! With him in a tux and her looking radiant in her dress, nothing could ruin the school dance - except maybe the sudden appearance of a demon.

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.

Yuichi desperately wants to make Shiori’s birthday special, but he can’t seem to think of how - until a chat with Ayu provides just the right inspiration.

Hoping to make her final days special, Yuichi hatches a plan to surprise Shiori with a birthday party on the day before her birthday! But there’s one thing he must do first - convince Kaori to attend the party.

Yuichi is rescued by Makoto - who offers him some encouraging words. Meanwhile, Kaori tries to help Nayuki deal with her mother’s accident. And finally, Yuichi is reunited with Ayu - at least temporarily.

Yuichi is still searching for Ayu. Akiko may hold the key to discovering her whereabouts, but will Yuichi be able to handle the truth about her current condition?