World-Ending Demon Emperor

The Mirror Demon King said, "That’s right, making a verbal judgment is easy, but truly verifying it is hard. However, this person managed to do it, and after decades of research, he found a way to eliminate the Demon Blood within Centaurs without harming their lives, simply turning them back into horses. This is the Demon-Expelling Return Elixir!"

Lanling said, "The Elixir King again?"

The Mirror Demon King said, "Yes, the Elixir King again!"

Lanling said, "He was once your mental slave?"

"No, he was my friend, the Prime Minister of my Mirror Empire!" The Mirror Demon King sighed and said, "He was incredibly ugly. In order to win over the woman he loved, he gave her the Curse E Dan, which would make her rapidly become ugly and old if she didn’t take the antidote annually, ultimately dying in agony. Despite his deep love for his wife, she felt that every day with him was torture and thus took her own life. The Elixir King, left alone, was very tormented and sought a way to remember his wife without such pain. Hence, he traveled the world and eventually came to my domain."

Lanling said, "Did he fall into your mental trap?"

"No!" The Mirror Demon King said, "He saw through my mental trap at a glance, then asked my help to alleviate his inner pain without forgetting his wife. So, he stayed and became my Mirror Empire’s Prime Minister."

Lanling said, "Did you ease his pain?"

"No!" The Mirror Demon King said, "A person too smart cannot deceive themselves, and eventually, he still committed suicide! He committed suicide in my domain, leaving behind his elixirs, his memories."

Lanling was silent for a while, then said, "Mirror, you planned for me to seek out the Centaur Tribe long ago, didn’t you?"

"Yes!" The Mirror Demon King said, "You need an incredibly powerful cavalry."

"I should be grateful to you, but I find myself liking you even less." Lanling said.