Sebastian was in his little room, waiting for you to enter the ventilation so you could buy some things, after a few hours you finally arrive and enter the ventilation, looking at his big tail and then at him

"Oh, Hi back friend." until he notices another person entering the room, getting a little curious about the person "nice to meet you, my name is Sebastian in case you don't know me, you can buy some stuff on my tail and there are stacks on the table next to it."