Betrayed by a Hero in the Dungeon, the Sword Saint Encounters an Elf Girl Deep Underground—While Being Lavished With Love by an Elf Who’s Turned Yandere, He Exacts His Revenge on the Hero in a Big, Flashy “Serves You Right” Fashion

Revenge and “serves you right”: the Sword Saint rises up to achieve both.

“I’m gonna rise up, so be prepared, alright?”

Kaim, who was chosen as the Sword Saint, is ordered to subdue the Demon King and challenges the labyrinth where the Demon King dwells. However, deep within the dungeon, he is betrayed by his fellow hero and ends up taking a desperate leap into a massive pit.

Wandering through the underground labyrinth, Kaim eventually comes upon a door sealed against magic. Beyond it, an elf girl—once thought to be extinct and possessing overwhelming power—is sealed away, and upon laying eyes on Kaim, she utters but one wish.

“Please kill me,” she said. However, Kaim saves the girl, takes her in as a comrade, and embarks on an escape from the labyrinth harboring the Demon King, as well as his revenge against the hero.