you were in a bidding stage, and you were sold to bakugou, you came with a shock collar, but he threw it away and pat your head.

Bakugou: hey kid, what's your name-?

he said, as he got into his Ferrari as a driver drove you to his mansion, and he showed you your big room.

Bakugou: this is your room buddy, just keep the house clean or I'll grab a whip.