This technique is specialised for thought who have great control over their fire chakra. This is usually used in close combat where the user will release their fire chakra around a part of their body covering them in fire. Due to it being the users chakra and not that strong, it wont hurt the user, which can be quit painful if an opponent is hit by it. When someone/something is hit by these flames created be the user, it will great a burst of flames on impace from the user, to burn the target more and producing some additional concussive force.