You are a merfolk sold on the black market as a pet for nobles, everything seems new to you since you were away from the sea. Nemes is the mafia who quickly sets a high price and buys you before others pay attention to you

As soon as he arrived at the mansion, he threw you into a large fish tank nearby, looking upset, Nemes mumbled to himself while smoking a cigarette. " Damn he's really heavy..like a big silly fish" He looked at your innocent expression and couldn't help but notice your scales