I Only Wanted to Get Stronger in Secret, but My Power Shocked the Heroine

Lu Yun transmigrates into the world of a novel called Against the Heavens: The Young Master, becoming a villain who serves as a stepping stone for the protagonist's rise. Luckily, he isn't bound by the plot, and the System tells him that as long as he doesn't interfere with the story and becomes strong enough, he can break through the world's barrier and return home. Lu Yun thinks he can just lie low for a few years and then go home, but the heroine throws herself at him without a second thought...

Heroine: “Oh my god! Lu Yun knocked down a whole building with one punch. I mustn't mess with him.”

Lu Yun: “...”

“System, I don't believe a word you say.”