In front of Kyoto Station, Yukihira Itsuka mistakes Irino Nagomu for her missing father. She never imagined that he was the son and heir(?) to a wagashi shop called Ryokushou—the same shop where she's been staying. When Nagomu and Itsuka begin working together at Ryokushou, they run into a little trouble.

One morning, on her way to school, Itsuka spots someone who looks like her father getting on a bus. She gets on the same bus to see if it really is him, but ends up falling asleep. Having lost sight of the person who looks like her father, Itsuka arrives in Ohara near the Sanzen-in Temple where she happens upon someone unexpected.

Nagomu is laid up in bed with a cold, and as his consciousness grows hazy, he remembers a senpai from his school days who went off to Tokyo to chase a dream. That night, as Itsuka tends Nagomu, she glances up through the window and sees snow fluttering down. Snow on the day before Valentine's Day. Seeing the snow piling up on the ground, Itsuka is reminded of the day when she was first left in the people of Ryokushou's care. Itsuka doesn't have good memories of snow. Nagomu makes some new ones with her, building snowmen.