MTL - Korean Entertainment Kpopstar - Chapter 1 The beginning of him and her

Liola—the best assassin in his world—has vowed to kill no more. He was being chased by an assassination organization when he accidentally dropped into a parallel universe: through a dimensional gate and into poor teenager Kaiser’s apartment. Instead of going to the government shelter for lost dimensional travelers, Liola and Kaiser wind up going to school together.

Liola has been trying his best to live the life of an ordinary person, but after certain things happen one after the other, he begins to realize that being an ordinary person could be harder than being an assassin.

Su Jianan was marrying the love of her life. It all seemed picture-perfect, except for a few catches. One, it was a marriage of convenience. Two, she would be divorced after two years.

With her well-being under threat, Su Jianan had only one choice to keep herself safe: marrying, and pretending to be loved by a powerful man capable of protecting her. Conveniently, her soon-to-be husband was Lu Boyan, a man she had been secretly in love with for fourteen years. She went along with the marriage, knowing full well that her love was one-sided.

Or was it?

Business tycoon Lu Boyan had known Su Jianan ever since she was ten. Back then, the death of his father had plunged his world into darkness, and Su Jianan’s presence had brought a new ray of light into his life. Now, it was his turn to protect her. He would marry her to keep her safe. But two years later, he would divorce her: it would no longer be safe for her to remain by his side.

What fate awaited Su Jianan and Lu Boyan? Would their marriage mark the beginning of a happily ever after? Or would it lead to heartbreak and sorrow? Would their marriage outlast the two years? What kind of secret was Lu Boyan keeping?

Follow along with the twists and turns of this slow-burn, action-packed love story!

- Description from Novelupdates

After waking up in the body of the Young Master of the Luo family, he finds he has the knowledge of hundreds of games and Light Novels. However, he finds his Dantian is crippled, so he can’t practice cultivation! Luckily, he has the Upgrade system.

Flatten the Devil's Palace, eradicate the demonic cult, slaughter the demon lairs, sweep through the demon realm, dominate the heavens and earth, control the three realms, be the supreme master of the mysterious sect, master of the Nine Yin, the 17th head of the North Star Sword Sect, the Heavenly Fiend Lone Star, the Supreme Sword Soul, the Supreme Infinite Mysterious Heavenly Wishful Great Sword Patriarch... Also known as Iron Egg, known for the wild history of relentless killing.