From Human to Skeleton: Revived with Infinite System Crystals - Chapter 19: Crawling Dungeon

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

This story is centered around the man named Yi Ji-Hyuk, who has spent 1000 years in a Medieval Western fantasy-like world before returning back to the modern-day Earth. When he returns, he finds that his home is facing monster threats, and that humans with superpowers have appeared to protect the innocent people of Earth.

The Crown Prince of the Capital brought a woman back home, hiding her from sight and pampering her to the skies. Rumor has it she's just a bumpkin from the countryside, pretty but utterly useless.Capital city buzzes: Just a vase rising through beauty alone.When the college entrance examination results are released, why is the name of the national top scorer that very 'vase'?At the gathering for the Association of Painters' new apprentices, why is she standing next to the Chairman?...As various disguises are unveiled, everyone is silenced, wishing they could hide. Who the hell said she was just a vase? Stand up!A certain lady, bullied, covers her hands and cries in pain.Lord Chen comforts her: My lovely wife is so beautiful and moving, why would you bully her?People, with anger they dare not express, cover their faces.Please make it clear, who is the one being bullied!

The servant looked at the grieving princess. “Your Highness, the Regent Prince sent your scholar fiancé to the Western Butcher’s daughter!” 

The princess gritted her teeth, speaking to her servant that it matters not as she has other suitors in line. Many days later, much to her dismay, the servant ran in a hurry. “Your Highness, the Regent Prince expressed his intention of becoming your suitor! All other men in line were sold to Gou Lan Red District!”

The princess was distressed. She said to her servant it matters not. She’ll soon be married to Prince Fuma. Then the uneventful came. The servant once more ran to her, almost tripping in the process. “Your Highness, Prince Fuma was imprisoned at home! Meanwhile, there’s a red sedan chair waiting at your residence for your marriage! It was led by the Regent Prince!

The princess was stunned. For a day such as this to come, it seemed impossible. This nothing but a sad story of a female boss crossing back in time to hold the thick thighs of the big boss. But while raising him, she was eaten in the process.

- Description from Novelupdates