MTL - 4.6 Billion Year Symphony of Evolution - v9 Chapter 17 Rule changes

[You have entered the dungeon at Gwachun Station’s 1st Exit.] When former high school student Kang Woojin finds himself returned back to Earth after being forcibly summoned to a foreign planet for 20 years, he soon finds that Earth is not the same, normal place as he once remembered it to be.

Being the daughter of the home wrecking mistress was bad enough; but when your own mother also detested you and actually loved your step sister while treating you like an abomination, that had to be the worse thing in life.As if things are not bad enough, her wedding day is hijacked and the Prince Charming she thought would be hers forever betrays her to be with her own sister and she realizes that they had been laughing in her face all this while.Distraught and heart broken, she does the next best thing, gets drunk at a bar then wakes up the next morning in a man’s hotel room and with a cheap wedding ring on her finger then she flees in fear.Unfortunately for her, that night won’t just go away and she finds that her groom actually wants her and wait for it… he is her ex’s father.“You went into a hotel and spent the night with a strange man, do you deny it?”“why should she deny it when she spent the night with her husband?” a steely voice said while his eyes looked down at Lyse with all the affection in the world then he turned to Brooke, his eyes losing their softness.“Do you have a problem with what my wife and I do?”

He had served in the strongest Special Forces, Heavenly Sword Special Force. As the commando of commandos, he created the Netherworld in the western underground world and became the formidable Oriental Yama. He said, “I’m Liu Feng. I’m adept at two things: killing and saving. If I want to cure someone, even ghost soldiers can’t take him away; if I want to kill someone, God can’t save him.” Now he was the bodyguard of Yang Shiwen, who was the daughter of the richest family in Donghai City and suffered from a rare disease. Could Liu Feng save Yang Shiwen’s life with his amazing art of healing? What would happen to his double life?

- Description from Novelupdates

A young man with an extraordinary mind is off on an exciting adventure when he mysteriously wakes up in the body of a feeble slave-guy in a different, rich in quirks world.

The main character, a selfish jerk, would use extreme means to achieve his goals. However, he never allows his base instincts to overrule his sense of decency. He always pays back both good and bad deeds.

Will his (terrible/excellent) mentality help him make a fresh start? Will he get through misfortunes and hardships of the new world?