Fire release: Flame guard ~ Fire release: Kouen Gādo
Rank: B
Element: Fire
Type: Ninjutsu
Description: Hiei began developing more unique jutsu's because he wanted to become stronger. He developed a jutsu using fire to created what looks like a traditional Japanese samurai's war armor that lays about a half a foot off his skin covering his whole body. Although Sasuke isn't affected by the head, the flames are so hot that they melt kuni into slag. Sasuke can also use this armor as a means of attack in close combat, It can mold its shape into tendrils and attack enemy's to a range of 7 feet.
Fire release: Flame gaint warrior ~ Fire release: Kouen Kyodai na Senshi
Rank: S
Element: Fire
Type: Ninjutsu
Description: User summons a tiny spark on the ground which grows quickly erupting into a giant Flame gaint the will attack the enemy relentlessly. If the opponent finds a way to damage this Flame gaint it will slowly reduce in size as it takes damage. Using simple Fire jutsu it can be replenished
Fire release: Hell gate release ~ Fire release: Jigoku Gēto Rirīsu
Rank: S
Element: Fire
Type: Ninjutsu
Description: The User shoots out a small ember at the enemy's feet which, with contact to the ground expands quickly on the ground covering as large and area as the user can manage with charkra amount. seconds after the circle has formed, no matter how large or small a torrent of fire jets up creating a pillar of fire which reaches up into the heavens piercing the clouds making it appear to be Rapture as the sky soon turns red an orange with the color of the fire and the temperature raises due to the extreme heat. Anyone caught in this torrent of fire would for sure be burn to a crisp.
(side note: rank of jutsu depends on the size of the circle)