Douluo Dalu: Legend of the Cat Douluo

Mao Xingyun has been a loner since he's a kid and it's not because he wants it but because people who got close to him suffers from bad luck, even his parents don't like him and tries to stay as far away as possible from him the closest he got to them was when he's still a newborn. Everyone who knew his complications tries to stay as far away from him, except for his cat Blacky who since the time he got him, never left his side. He never had a friend or even a girlfriend, basically he's alone so when his cat died of old age he also followed him to the afterlife.