Ker stood by the lab bench, suppressing the chill crawling up his back as he coldly tossed the mirror into a container filled with synthetic blood.
"First, soak it thoroughly in the blood and let it absorb it."
"During this process, it must be tainted with resentment and weird energy. Otherwise, an ordinary object cannot absorb blood."
"I used to simply kill people and feed it with their blood. Those who died often generated immense resentment."
Kro glanced at his brother.
Ker's expression did not change as he said, "Of course, that approach is wrong. We should cherish life. Life is precious and worthy of reverence."
Mr. G leaned closer. "Then resentment must be added to assist the process."
Kro said, "The Weird I contracted can control the byproducts generated by these negative emotions."
He raised a hand and summoned the Blood Robe-class Weird—the Undecaying Corpse.
Previously, when Ker had been researching spiritual artifacts, Kro had been able to help largely because of the abilities of his contracted Weird. He could distinguish any anomalous energy, absorb it, and use it to control, attack, or strengthen himself.
"Let's begin, Brother."
"Alright."
Kro controlled the Undecaying Corpse, which released the various negative emotions stored within it.
Resentment, hatred, killing intent, jealousy, unwillingness, regret, greed, disgust, despair, pain, indignation, fury...
Each kind had been painstakingly collected by Kro. These different emotions could all be converted in different ways to strengthen him.
Though... the energy converted from those emotions would affect him as well. So unless he was on a mission or helping his brother Ker research those Anomaly Artifacts and spiritual artifacts, he generally did not use them.
Kro separated the resentment from them and injected it into the mirror soaking in blood.
"Hm?"
Mr. G turned around and was instantly dumbfounded by