Superstar From Age 0 - Chapter 502:

In her previous lifetime, they had married for five years. He meant everything to her, but she was thrown away like an old shoe.

Ye Xiao was a superior cultivator in his previous life. The three factions of the realm kill millions of people every time they attempt to seize cultivation resources. Wealthy towns turn to wastelands in just a single night. They cover up their crime with an assertion that the towns were suffering from pestilence and disasters.

They forcibly hold all the resources for cultivation, monopolize all valuable practice materials, and keep outsiders from cultivating so that only their three factions could cultivate in the realm. Ye Xiao declared war against the three factions in retaliation for their actions. He fought alone and ended up dying in vain. However, he is reborn into the mortal body of a 16-year-old boy. He will use the powers he cultivated in his last life and slaughter his way back into the Realm. The story begins!

- Description from Novelupdates

In 2008 America, the advantages of being reborn were about to vanish, and Link could only rely on his powerful physique, attractive appearance, superior publicity tactics, and numerous scandals to gradually rise from obscurity to become a top influencer of the Times and a tycoon in the entertainment industry.

An ordinary (?) grandfather, Choi Chuntaek. In an effort to protect his granddaughter, he started the virtual reality game 'Arkstar.'

Then... he accidentally obtained a legendary class?