Cold War between Mr. and Mrs Vaughn: He Regretted when Divorce - Chapter 124: Entwined Passions

Her sister steal her lover

She thought it was a dream

after rolling and waking

Nightmare Reality

Her loved ones, her love, her life

They were all trapped in that big fire

burned to ashes

James, a brilliant mechanical engineer and passionate history enthusiast, loses his life in a tragic house fire—only to find himself in a mysterious world as the ruler of an island nation. Armed with his modern knowledge and unwavering ambition, James embarks on a bold mission to industrialize his kingdom and build an empire on which the sun never sets.

As the last abyssal demon in the world, Wen Long was pulled into various worlds to do tasks by a guy who claimed to be a system. The goal of her mission was to save those villains who had been blackened for various reasons…

- Description from Novelupdates

The game spoilers turned out to be fake. The characters I gathered thinking they were heroes are actually all villains. In other words, I accidentally created a villainous organization.