Premise: A 30-year-old office worker, Haruto Saito, dies in a mundane accident and is reincarnated into a classic fantasy world. However, instead of being hailed as the chosen hero, he’s immediately labeled as the "False Hero" by the kingdom’s oracle. The kingdom already has a real chosen hero, a charismatic teenager named Kaito, who is destined to defeat the Demon King. Haruto is seen as a mistake—a glitch in the system—and is treated as an outcast.