Kuro is scute

A young man with brown hair in a school uniform stands in a hallway, looking forward as other students pass by. The scene cuts to a small, dark-furred creature with a bell collar being held gently, then to a close-up of a character with white hair and red eyes, followed by the white-haired character lying on the floor while the brown-haired man stands over him with a staff, and finally a close-up of the white-haired character's intense red eyes.