World Isekai

Nobody thought the end of the world as they knew it would come like this.
In a dystopian future, 95% of the population was sent to another universe, one resembling the game Jack had played, "Elder Heir Online'.
He would've normally enjoyed such an opportunity, but the company 'DiveCore', from his real world, came along.
As long as any of them breathed, his revenge wouldn't be complete.
Using his knowledge of the game, and willingness to go through the worst to exact vengeance, he will slowly become what he avoided when he played the game in the real world: a villain.