A reincarnated being is born 20 years before the start of canon, The MC is born with the with a ability of becoming a strongest fire soldier in the world. He will be a legendary figure to the new generations and a myth to all fire users since he is not associated with any group but he always help them when their in danger with a flame that could melt even metal he hide in the shadow observing them.
MC abilities:
Fire Breath - he can breath fire like a dragon, fire power depends on how much fire you want to use.
Fire Eating - he can eat fire to heal, refill, and strength himself.
Fire Immunity - all kind of fire will not work on him.
Fire Dance - he can produce and control/bend all kinds of fire.
Dragon Skin - he was born with a tough skin that he can resist a certain amount of physical attack.
Ice Touch - by gathering all the heat into his hand he can freeze something/someone to death.
Flame Weapons - he can create weapons out of his flame.
Lightning Strike - he can only create lightning if there is a storm or rain as he need a medium to do that.