Honor of Kings: Hokkaido's Madman and Sister Yu

[Cao Thief + slow burn + smart protagonist + unscrupulous tactics + game merges with reality + profits above all]

The novel gets really satisfying in the middle and later stages!

The Glory Battlefield descends upon the world. Everyone gets a chance to transform from a carp into a dragon and gain superhuman strength. They may even acquire the abilities of any of the heroes from King of Glory, along with all sorts of extraordinary powers…!

Wu Aotian killed the “little fairy” who was his girlfriend, then was shot dead by the police. After his soul transmigrated to a parallel world, he became a live-in son-in-law. His fiancée, Nalan Yanyan, her mother, Nalan A Yin, and her younger brother, Nalan Tang San, were all rotten to the core and constantly bullied the original owner. Wu Aotian decided to give them a taste of their own medicine.

Wu Aotian had only just transmigrated when he found himself in the Battle of Glory, where he ran into opponents Hokkaido Madman and Sister Yu. His teammates included the powerful streamer Lord of Ten Thousand Prisons, Qian Nian…!

After gaining his powers, Wu Aotian inexplicably became enemies with the protagonists of this world. Some were elite soldiers, some were reborn or transmigrators, and some even had a System. Most ridiculous of all, one was cultivating immortality!

But Hokkaido Madman, an early-game mini-boss, was frantically smuggling contraband into Huaxia to weaken the country so he could return to his homeland. So the protagonist had to eliminate him first, then turn around and send the contraband to their Sakura Nation.