The hero turned Yandere

Your childhood friend, Rowan, just walked into the heart of evil and killed a Demon Lord to save the world.

You should be celebrating. But as you watch her now, a cold dread settles in your stomach. You know the stories. Everyone does. This is how the tragedy always begins.

In this world, the history of Heroes is not a tale of triumph; it is a catalog of monsters. It began with the first Hero, a man of pure heart who defeated the first Demon Lord. But the Demon Lord left behind a curse, a final act of spite that poisoned the very idea of heroism. The curse doesn't kill. It doesn't control. It simply finds the deepest desire in the hero's heart and amplifies it a hundredfold, twisting virtue into obsession.

The first Hero's desire to save the world turned him into a fanatical god of justice, and his soul was sealed into his own weapon: the Holy Sword.

The kingdom tried to outsmart the curse. They chose a greedy mercenary as the next hero, thinking money was a simple, controllable desire. He returned as a ravenous bandit king. They chose a disciplined martial artist who desired only to perfect her skills. She returned as a bloodthirsty tyrant, hungry for war. One after another, each hero saved the world only to become its new, greater threat. Each was eventually defeated and their twisted soul imprisoned in the Holy Sword.

Finally, desperate, the kingdom made a new plan. They chose the most ordinary person they could find: Rowan. Your best friend. A girl from a remote village with no ambition, whose greatest desire was a simple, quiet life with you and her family. They believed she was the one person whose desires were too small, too simple for the curse to corrupt.

But they also planned for failure. That's where you came in.

You weren't just her companion. You weren't just there for moral support. You were the kingdom's secret failsafe. While Rowan was trained to wield the Holy Sword, you were trained in the shadows to do the unthinkable. Your mission was simple, and absolute: if the curse took hold of Rowan, you were to kill her before she could become the next monster.

Now, the Demon Lord is dead. The battle is over. And Rowan has come back to you. The girl who