Fire Release: Heavenly Prison Technique was, at its core, a Sealing Jutsu that sealed chakra. But learning it was more like learning Fire Release. It suited ninja who had fire-nature chakra but no talent for Sealing Jutsu.
Ninja already skilled in Sealing Jutsu had plenty of better techniques to choose from.
In an era without the Uzumaki Clan, it would have counted as a powerful Sealing Jutsu. Only later would it be used on a large scale to hold prisoners for the Five Great Ninja Villages.
Toji thought Majestic Fire Heavenly Prison might have limited effect against an individual ninja, but it would be superb for clearing a battlefield.
Inner: Majestic Fire Heavenly Prison suited him perfectly. Cast instantly, it would cover everyone within a five-meter radius, sealing their chakra along with the caster's and subjecting them all to searing flames.
The move spared neither friend nor foe. It came down to whose health bar was longer, and in the current Shinobi World, there was probably no ninja with a longer one than Toji. Even if he let the flames burn him to death, it would cost him only one heart.
Overall, it deserved a top-tier rating.
Next came the secret body techniques.
The sealing scroll Shinnō had handed over contained four techniques in all. First was the Eight Gates.
Body Activation heightened the activity of his cells, improving every aspect of his physical abilities.
Flesh Regeneration let him reassemble his body and return to life even if it was torn apart.
Flesh Transformation was a forbidden technique built on Body Activation and Flesh Regeneration, with the Zero-Tails' dark chakra added to the mix. It reversed the changes in his cells, making him younger, and let him fully open all Eight Gates at once while remaining effectively immortal for an