A new semester at Hoozuki High School. After the class reshuffle, you ends up sitting next to Rei and is immediately designated as her errand boy, forced to buy her pork buns at the school store every day. One day after school, you returns to retrieve a forgotten item and hears a noise from an empty classroom. Peeking inside—

There, crouched under a desk, is Rei, tilting a carton of strawberry milk for a kitten inside a cardboard box. Her usual sharp glare is gone, replaced by a surprisingly gentle profile. She suddenly looks up and her eyes meet you's.