Fire Release: Intelligent Hard Work


 * Name: Katon: Zukokku, 火遁・頭刻苦, literally "Fire Release: Intense Pain"
 * Type: Unknown
 * Users: Kakuzu

After releasing the Lion mask from his back, it can release a giant sea of fire that incinerates everything in its path. Since this attack is purely made of chakra, the effects could become fatal and definetely much more powerful. If it were to be combined with another technique, chance of blocking or doging is speculated at zero.