A Seonbae to-took m-my-my b-b-Bo-BOX?!?

I turned and saw the guy from earlier standing there and playing with the ball. I saw my box in his hands!!! Oh shit!!! What the hell shall I do?! Should I just go to him and take the box and apologize that it was not for him and he would give me the box back? OF COURSE HE WOULDN'T DO THAT! I saw he was a Seonbae. Never mind… I'll sleep over it and tomorrow will be a brand new day… I walked home fast. I got home and nobody was there. As usual. I went over my bed and fell asleep. Can't I take it back?