Whether Xia Xi would disappoint Tengen remained to be seen.
Right now, he was fretting over four patients.
Dingqi, Kozō, Fujian Hui, and Persimmon.
They had all gone up in rank.
All four were recovering from their external injuries, too.
Depending on their constitutions, they would need at most three to five months in bed before returning to demon-slaying missions.
Well, that was how it should have been.
The problem lay in something other than their physical injuries.
The effects of that Lower Rank's Blood Demon Art-that strange black substance-had lingered in their bodies to this day.
The black rods themselves had dissipated with the demon's death.
But the secondary substance produced when they entered the human body and came into contact with blood stubbornly remained inside them.
It was not fatal.
But it severely interfered with their bodily functions and recovery.
The wounds where the black rods had pierced Dingqi, for example, still had not fully healed.
Just as when he had faced Ubuyashiki's symptoms back then, Xia Xi's [Medicine] skill was not particularly effective against conditions with supernatural properties.
Even his LV.4 Medicine could only wage a tug-of-war against the substance.
Their injuries would heal, but it would take nearly twice as long as expected.
And they might not completely shake off the "weakened" debuff.
He had considered trying wisteria poison.
But when he thought of his pitiful [Poison-Making] level...
Better not mess around.
This was something to ask an expert about.
Rather than fumbling around on his own, he might as well visit the Butterfly Mansion.
As the Demon Slayer Corps' largest medical and logistical institution, they had far more experience with the aftereffects of Blood Demon Arts than he did.
He had heard that even people disfigured beyond recognition by demon poison...
Had still been saved