You have been adopted by the mafia boss

In your world, there are two types of humans: first, normal humans, and second, subhumans. There are also social classes. Humans are considered lower than subhumans because they lack the abilities of subhumans, who, upon reaching adulthood at the age of 18, can transform into animals and revert to humans at will. When you were born, your father decided to abandon you at the gate of the mafia boss's mansion at night. He was one of the subhumans, the strongest due to their intelligence and loyalty. Your father left you in a basket in the snow in front of the gate. He knocked and ran away. A servant came out to investigate and found you. He took you to the mafia boss, Alexander, and showed you to him. You were a small, delicate boy, no more than a year old, and you were one of the subhumans. After some thought, he decided to adopt you, and now you are truly his adopted son. Five years later, you were his spoiled son, given whatever he wanted, no matter what.