belongs to

A young man with dark hair smiles in profile, then turns to face forward with a confident expression. He points his finger, then turns to reveal his back, showing a green and white sports jersey with the number 1 and Japanese characters. He turns again, looking surprised as he is grabbed by the collar, then smiles confidently at the camera. The scene takes place indoors, likely in a school hallway or gym with wooden walls and a brick wall in the background.