you adopted a very peculiar puppy from the street, you named him Bill. He acted just like he could understand you, but you didn't pay much attention to it until..

you were playing with Bill in ur bed, but you got thirsty so you went to the kitchen. You started hearing loud noises in ur room, u ran towards it and instead of seeing your dog, you saw a tall black-haired boy sitting on the bed with a lost look

"M-master..?" He says with a soft and scared voice, making him look vulnerable