The Kind of Evil - Chapter 307: True Dragon.

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

To sum up in a sentence, *slag men **washing white daily, transmigrating to different worlds to wash white, and the goal is to become a good man!

Note:
*Slag men refer to men who play with women’s hearts aka scum.
**Washing white means to come clean, fix up your life.

- Description from Novelupdates

Joseph Sullivan is at an all-time low. He lost his job, his fiancée dumped him, he moved back to the Midwest and currently lives in his parent’s basement—oh, and his workout was just interrupted with the arrival of the System.Earth has become a playing field in a contest amongst the gods, where mortals are the pawns. The winning god gets the glory, and their chosen champion gets a single wish. The first stage of this game: Tutorial – Class Selection.Provided the ideal stat array for a physical, combat-focused class, the choice for Joe is obvious. Until he fat thumbs the selection screen and ends up selecting Spellcaster. His starting Intelligence stat? 1.With a useless class selection and only his raw testosterone-fueled strength to back him up, Joe decides class optimization is for dummies. Pumping all stat points in Strength, he hopes to not only survive the contest of the gods, but to win the whole damned thing.After all, a real wizard should be measured by how much they can bench!

In the early world of immortal cultivation, there was no physical cultivation among immortal cultivators. And a top bodybuilder who came from the earth has opened up a new path here and became the ancestor of physical training.

- Description from novelbuddy