MTL - Never Marry a Man With Two Tintins - v3 Chapter 6

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

When I woke up after being transported to another world, I am suddenly the antagonist? This script is wrong! I stole the other guy’s girl! I also have a super strong big sister! This script is even more wrong! There’s even an Overgod Space, along with the infinite worlds? I must be dreaming! Wu Ming calmly maintains his neutral expression and journeys ever onwards.

When a normal human suddenly dies and enters another world with the almighty cheat, their very own system, what do you think would happen?

They will rise above every other being and soar the skies, for they will become an unstoppable force that brushes through the entire world, causing waves... Or so it normally goes, right?

After Victor dies, he did get transmigrated, but it wasn't as a rich young master or some character with unfathomable potential. NO. He woke up as a random dungeon mob in another world...

Read to follow Victor's journey through his new life as a mob.

Yu Shanshan, who has been tyrannical and lawless for 20 years, suffered retribution at the age of 21. She changed from a little ballet princess of 45 kg to a poor and fat one of 90 kg.. Apparently, eating was the most important thing in her life. Her success in losing weight was far away.

However, one day, the father of her child who had disappeared for four years came back. From then on, Yu Shanshan was forced to embark on a diet that was worse than death.

- Description from Novelupdates