Cheng is an aspirational tale
"An elixir that will take you to Overlord."
"Eh?" Cheng suddenly looks unaccountably disappointed with you in the faint light he's generating. "What? No. Nononono. Absolutely not."
"Not what?"
"This is not for me. Advance to Overlord? What a ghastly thought. What in the world would make me do something stupid like that?"
"I thought—"
"People already spend all day every day trying to get me to do what they want. 'Oh, please join our war, Underlord, we'll stop the King if you stand with us.' 'Underlord, may I say you enjoyed my restaurant?' 'Please, Underlord, heal my father.' Where would it end if I was even stronger? I'd never get a moment to myself. No, that's exactly opposite of the point."
You feel something trembling in the air, and Cheng's eyes widen in a look of horror that's almost alien on his normally bored, annoyed face. "No. No, no, no, that's not right," he says, haunted.
Unconsciously your hands move to your axe at your side, not that you stand a chance of lasting a fraction of a second against something that could threaten Cheng. <<Etaja?>> You think. You try to scan for what could be worrying your boss, but all your sense returns is a feeling of...Cheng himself.
<<...You're fine, kid, I think I know what happened.>>
"No. That doesn't count! That's not fair!" Cheng shouts at the air. But to your senses, something is stirring within him. Something beyond your ability to truly comprehend... but you've felt it before. When you made an off-handed, but knowing, comment to the Margavine.
<<Is this related to Soulfire?>> you ask through your connection.
<<Yeah. Remember that you get to Underlord by accepting a fundamental truth about your past. No world's energy system is exactly alike, but they do tend to follow certain rules... certain patterns... so it's no surprise that Cradle's Lords follow a sytematic procession too. Past for Underlord, then present, and probably something about your future for the final step.>>
"I. Do. Not. Want. To. Advance!" Cheng grinds out. Contrary to his words, his soulfire surges even brighter.
<<So, his revelation to advance to Overlord...?>>
<<Was how little he wanted to advance to Overlord. Kinda funny, isn't it?>>
Though you are sympathetic to the powerful man ranting and raving at the heavens, you have to admit... <<Yeah, it kinda is.>>