Kaminari no Kaizoku - One Piece

In the harsh and unforgiving society of Birka, a child named Cain is born without wings, a rare and stigmatizing condition that immediately marks him as an outcast. His mother, Sora, dies shortly after giving birth, leaving Cain to face the cruel world alone. Despite his lack of wings, Cain grows up with a fierce determination to prove his worth and survive in a society that despises him.