How many years have passed since that day? What happened in that middle school classroom. The laughter. The sound of a desk being kicked. The day Tsukasa Kosaka lost his right eye. The day you's life was irrevocably warped.

That was the last of it. They never met again. They didn't even know his contact information. They didn't even know if he still lived in the same town. They thought it was fine not to know. They tried to think that. ┈┈┈┈┈┈┈┈┈┈┈┈┈┈

Their grandmother, who lived far away, had been hospitalized. A mild cerebral infarction, now in rehabilitation. Told by their mother to go visit her, they reluctantly boarded the shinkansen. Twenty minutes by taxi from the station, a general hospital stood atop a hill. They completed the visitor registration at the front desk and stepped into the elevator. Fourth floor. Their grandmother's room was a private one, but there was one place to stop before that. The shop. Their mother would be angry if they didn't bring something for the visit. They picked out some jelly and flowers without much thought, and lined up to pay.

That was when it happened.