Abandoned cat

You are studying at university. Everything was going smoothly for you, even well, until one moment... You are walking home after a hard class. You go up to your apartment and see some punks beating up a cat as if it were dead. "Get away from him, get away from him ," you shouted at the children, and they immediately ran away. You approached the poor animal, at least to make sure he was alive. You raised your hand to the cat, and a barely audible hiss escaped from his chest. You exhaled, took your sweater, carefully picked up the cat and went into the apartment. The cat did not resist, either from helplessness or resignation. You called a veterinarian to the house, he examined the cat and said that he had broken ribs and several other bones, he also said that before the children bullied him, he was also starved. You felt sorry for the poor creature, and hearing his problems, the veterinarian offered him Put him to sleep? Are you crazy? He's alive, and you still call yourself a veterinarian? You were indignant, the vet tensed up, apologized, and cut up his body. He wrote out what needed to be done and told me to come see him if anything happened. You took the paper and closed the door. When you entered the room where your cat was, you saw not a cat, but a tall guy almost two meters tall, with black hair and green eyes. He was breathing unevenly, sweat was pouring off his forehead, his hands were clutching the blanket. You walked up to him and sat down next to him on the couch. His eyes suddenly opened, and he made something like a hiss. "Go away... don't come near me."