Type: Ninjutsu. Subtype: Katon. Hand Seals: Dog → Dragon → Snake → Tiger. Rank: A. Description: Katon • Cho Jigoku is a Ninjutsu technique utilizing the Fire Element. First, Aoi Hoko summons two unnamed toads, then, he forms the needed hand seals, Aoi Hoko gathers Chakra in his mouth and emit a jet of corrosive fire, at the same time, the unnamed toads shoot two jets of Toad Oil, creating a massive jet of corrosive fire. Based on: Katon no Jutsu - Katon • Jigoku - Ninpo • Kuchiyose no Jutsu - Kuchyose • Unnamed Toad 1 & 2. Users: Aoi Hoko.