my first story, a hard life in a new world

ryo has had a hard life. he has been beaten and abused by his parents. one day he snaps runs away. he lives on the streets for a full year but one day he sees a pair of teenagers beating up an injured dog in the alley. having always had a sweet spot for animals he protects it and is killed. the god of reincarnation had other plans however.  he becomes a dungeon master in the other worlds, and he vows to protect those who cannot protect themselves. however the goddess nows that in that world innocence never lasts long, but even so he he tries to protect the weak, even while his very charcter changes.