"What are you doing? Forget it, forget it... Just tell me, what can you do?" Akaseki looked helplessly at the ever-unhinged Hell Yama King. Though they had formed a contract, Akaseki still found it difficult to pry information from its mouth about the Sage of Six Paths, his ancestor Indra... and such matters. What disappointed Akaseki most was that it knew nothing about the "Immersion Demon God," either.
"My avatar manifested in this world can repair flesh, interrogate and pass judgment... Combined with thy Sharingan, it can share vision," Hell Yama King said without opening its mouth.
"Repair flesh? To what extent can it be repaired?" Akaseki immediately pressed.
"Complete restoration," Hell Yama King emphasized.
Akaseki frowned at that, feeling that it was bragging, so he asked again, "Even if someone were smashed to pieces and stabbed with ten thousand holes, you could repair them?"
"Indeed," Hell Yama King said matter-of-factly, then promptly added, "However, I repair only. I do not meddle with life and death. I cannot replace what is missing, nor preserve life."
Akaseki: ...
Only after hearing that addition did Akaseki understand—Hell Yama King's repair was a form of "absolute removal of external injuries." Whether it was severed arms and legs or even a decapitated head, it could reattach them.
But!
It could not regenerate severed limbs or wounds on its own. The "parts" had to still be there. Whatever was missing could not be regrown, and it did not guarantee that the person would still be alive. It did not even replenish vitality; it merely removed external injuries.
In other words, under the premise of "absolute respect for life and death," it possessed limitless restorative ability.
This effect...
It couldn't exactly be called useless!
For Akaseki, who had not held such high expectations to begin with,