Just as with Spine's Open Spine, a Monk saturated with metal within their body can undergo "Demon Ascension,"
manifesting their sins perfectly through the metal inside them,
Agatha's majestic and robust body indeed suited the appearance of an Iron Pillar Nun, it also invoked a very direct and intimidating presence.
But the true purpose of the body was not to exert strength, but to serve as a "reserve of energy."
At the moment of Demon Ascension,
channels of special metals would form between Agatha's body and the metals,
like metal straws inserted between the flesh, sucking the muscles and adipose tissues as if they were nourishing liquids.
The originally Nine Dragon Injection matured physique gradually shrank, became very natural, and transformed into the dimensions of a normal person, fitting Agatha's delicate face even more.
The condensed body shone with a metallic hue, and the Monk's leather clothes immediately shrank, wrapping tightly around the post-Demon Ascension body.
