I Changed Class to Mysterious Merchant and Controlled My Zero Charisma from the Start

[Unusual talents] + [A whole lot of golden fingers] + [Invincible all the way]

Cheng Xin transmigrated from Earth to Blue Star, and eighteen years later, he acquired the mysterious merchant profession.

From then on, he had the System and a shop at his disposal. He could activate all kinds of cheats to his heart's content!

The merchant profession has no merchant? No problem. Watch me roll a Charisma score of 0 from the start!

The merchant profession lacks combat skills? No problem. I get a Diamond-tier skill from the start!

The merchant profession can only fight alone? No worries. Watch me summon a god for you!

Much later, on the battlefield against the alien races, a man dressed in black keeps hawking his wares.

“Hey, buddy, want to buy something? I've got everything, including your life.”