Teriya looked at the tea in the cup, pondered for a while and began to explain to Yushiro.
"A kind-hearted doctor in the Heian period used his medical skills to continue Muzan's life even when other doctors said he would not live to be 20 years old."
"But Wu Mei killed the good doctor who treated him while his condition continued to worsen."
"Shortly after the doctor died, the medicine began to take effect and Wuhan turned into a ghost."
"Wuxian checked the doctor's prescription and learned that the blue Bianhua flower was missing. As long as he found the blue Bianhua flower, he could be cured."
"Then the doubt arises."
"A kind-hearted doctor used a trial drug to treat a recognized terminal illness. The patient's life was extended, but the condition continued to worsen, and the doctor did not know that he would die tragically at the hands of a cruel man..."
"How could it be written that a non-existent drug is missing to enhance its properties?"
Yushiro analyzed calmly.
A kind person would only try to invent a non-existent drug to protect himself if his life was threatened.
And that doctor's life was brutally taken away.
In other words, [Blue Flower of the Other Side] exists.
"In other words, Onibatsuji would turn into a man-eating ghost without absorbing the blue Higan flower. This result was known to the good doctor from the beginning."
"On the other hand, if the good doctor who treated Wu Kuai had a way to turn people into immortal ghosts by eating people through drugs from the beginning, then why wasn't he himself the first beneficiary?"
(With so many demon slayers, no one wants to follow up?)