Fire Release: Heavenly Prison

An used by Mui's clan. The ones who are subjected to this technique have a formula applied to them, which will suppress their chakra, hindering them from using techniques. Mui uses this technique on the prisoners of Hōzukijō. If the prisoner use some minor to medium techniques, the seal would cause them intense pain; if they were to leave or forcefully draw too much chakra, they would burst into flames, killing them. The seal will disappear if the user dies.

However this technique only suppresses normal chakra. When enhanced with natural energy, 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.