I remember this novel that a boy who is hamster or something and his owner died leaving him alone but with an identification that his previous owner made for him, but he id quickly running out of money so then he played games to make a living, but the thing is he is really lucky even though he is kinda dumb and cute. Like for example when there is only three of them and one of them is the enemy they need to kill and his partner (who is basically carrying him) is in combat with the said enemy. In the end he won, who didn't do anything because he is in the safe zone or something when the time run out and the other two aren't inside. Dunno if you get that, but if you did please tell me hehe.