Nen could generally persist in three forms.
The first was the normal Nen aura equivalent to Life Energy, continuously released with the human body as its furnace.
The second was the Nen aura unconsciously imbued into works by geniuses and masters in various fields.
This Nen aura was like the embodiment of craftsmanship, representing the pinnacle of their skill in their respective fields, as well as a pure will untainted by stray thoughts.
Therefore, the Nen intent attached to such works could usually endure for a very, very long time.
The third was post-death Nen, which used intense negative emotions as its vessel after a person died and their body perished, lingering in the world like ghostly flames.
The source of this kind of Nen aura was usually an obsession that could not be dispelled.
And because it was born from negative emotions, it carried threats of varying severity.
Nen users were actually fine. As long as they did not enter a state of "Zetsu," they could generally withstand the threat of post-death Nen.
But once ordinary people encountered post-death Nen, they would lose their lives at worst, or their sanity at best.
That was Moro's understanding of the three forms in which Nen aura could persist.
So when he heard that the virus was connected to post-death Nen, he could not help but be surprised.
Or rather, he found it difficult to imagine that the two could be related at all.
In fact, after coming to this world, he had seen quite a few antiques and handmade artworks carrying Nen intent, but he had only seen post-death Nen once, aboard the airship.
"Related to post-death Nen... such as?"
Moro stepped over the bodies scattered across the ground and came to Simbika's side, looking down into the still well-preserved coffin.