Fire Dragon's Menacing Fang

While using his Fire Shroud Form Koji can accumulate gigantic amounts of fire in his hands and compress it, forming fang shaped constructs around his hands. He can then fire it by swinging his fists against his target. Since it's basically highly-compressed fire, anything that comes into contact with the shells makes them detonate on the spot, desintigrating most materials on the spot. Koji, although having no defined limit, to how many he can fire, he avoids shooting too many, due to sheer chakra costs.