ok toi animé finatics. i need your help on a animé show. can toi please give me the name of the animé ou it's characters

this animé montrer is about 3 guys and a male kid who travel together defeating monsters. one of the guys is a monk. another guy is a gambler who likes smoking ang hot women. another guy has a pet dragon and the kid was found par the monk locked in a cage with a chain around his neck? if toi know what i am talking about please answer my question. thank you