MTL - Blade and Sword God Sovereign - ~ Chapter 51, their respective commitments

A chubby little girl was reborn. She received a heaven defying system as well as a drastic weight loss as she advanced in ranks to become a goddess. She started a company, became the big boss, signed on superstars and filmed movies. There were no limits to her counterattacks - face slapping and tumbling around were daily occurrences to her. In the end, midway through her smooth-sailing ventures, her system would always play a few tricks. [Ding! Issuing the main mission: Host, please seduce Mr CEO with all your might!] What?? The goddess was instantly dumbfounded. Hold on!! However, the goddess suddenly turned backwards and her body dashed towards Mr CEO in a manner that was completely out of her control. One step, two steps, three steps… With a crash, she hugged onto him tightly, unwilling to let go even when her life was put on the line.

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

Sano Yuji, a black company employee, is summoned to another world while finishing his work at home. His profession in the other world, a Monster Tamer, is considered a job that makes it difficult to become an adventurer. However, thanks to some slimes he met, which read several magical books, he gained magical powers and the second profession, Sage. Yuji acquired overwhelming power, but is he conscious of his strength? Blindly becoming unparalleled and strongest in the world!

This is the story of how I became an outer god.