|Fire Release: Heavenly Prison|
|Movie||Naruto 5: Blood Prison|
|Appears in||Anime, Manga, Movie|
|Classification||Hiden, Ninjutsu, Juinjutsu, Chakra Absorption Technique|
An imprisonment technique (禁錮術, kinkojutsu) used by Mui's clan. The ones who are subjected to this technique have a formula applied to them, which will prevent them from moulding chakra and from using techniques. It will also drain them of their chakra at a slow but steady rate. Mui uses this technique on the prisoners of Hōzukijō.
However, for people with high amounts of chakra, such as Naruto, they can still mould chakra and use techniques to a certain extent. The techniques used, however, will be severely hampered, and the seal will cause the user in question intense pain, as though their bodies were on fire; if too much chakra is forced out, the formula will set the victim ablaze. If the ones who have the seal on them leaves a certain radius from the applier, then it would cause the victims to burst into flames, burning them to ashes. The user can also ignite the seal at their own free will.
Being a fire technique, it cannot work in water, and the victims simply has to submerge themselves in a body of water to use chakra with ease; anyone set aflame by this technique can be saved if water is poured over them. Also, this technique only suppresses normal chakra from within one's body; when enhanced with natural energy gathered externally, one is still able to use chakra. If anyone with the seal applied were able to create a shadow clone, the clone will not bear the seal. The seal will disappear if the user dies.
Raizo learned this technique in his stay for a mission in Kusagakure as they traded of learning Fire technique teaching him a highly adavnced Fire Technique