I Only Borrowed the Protagonist's Luck—Why Did They All Turn Evil?

Kavis awakens in a cursed world as the last surviving demon—a death sentence in any story. But at fourteen, he unlocks a Destiny System that lets him see and siphon luck from the so-called Children of Destiny, heroes meant to save the world. It seemed like the perfect survival plan: steal a little fortune, stay alive, let them handle the apocalypse. Except every time he drains their protagonist aura, something goes horribly wrong. The righteous heroes start making darker choices. Their saving-the-world missions twist into something sinister. Now Kavis must face an unsettling question: is he su…