Reborn as a Duke's Son… I Became Her Yandere Villain

Kai Soren was a twenty-three-year-old web novel reader, completely ordinary in every way. He spent his nights reading web novels and his days working a job he did not care about. Then he dies and wakes up inside his favorite story -- not as the hero, but as the villain's son, a duke's heir destined to be executed in the final chapter. Armed with knowledge of every plot twist, every betrayal, and every character's weakness, Kai has no intention of following the script. His first priority is survival. His second is preventing the tragedy that destroyed the female lead in the original story -- a woman he admired from behind a screen and now finds himself standing beside in flesh and blood. But rewriting a story from inside is not as simple as Kai imagined. His every deviation from the plot triggers consequences the original author never wrote. The female lead notices his strange behavior. The hero suspects interference. And the mysterious system that governs this world begins to issue warnings. As Kai grows closer to the woman he once read about, his protectiveness crosses the line into obsession. The reader who became a duke's son discovers that being a yandere villain is not a choice -- it is what happens when a man who watched from the sidelines finally has the power to protect the woman he loves.