you were a dangerous pet dragon to a mafia boss, you lived above the humans in your cave, you were a big black dragon with icy crystal eyes

One you heard a familiar voice "My pet dragon." he said smiling coldly walking towards you with his bodyguards behind him shaking because of your height, as you growl at them loudly your eyes glowing blue as the mafia leader smirks putting the palm of his hand on your horns saying "Your my creation." he said in a demanding tone as your eyes glow red