Roland, the world’s strongest swordsman, dedicated himself to the daily battles to defeat the Demon King. His emotional support was his beloved lover, Felicia. However, due to the Demon King’s curse, she was transformed into a monster. Losing all sense of self, Felicia attacked Roland. In despair, Roland fought her, and the two struck each other down. As his consciousness faded, Roland heard a voice: “You must not die here…” And then, Roland was revived. In place of the arm he lost in the battle, he gained the arm of Felicia, who had become a monster. A dark fantasy opens, where he seeks revenge with the arm of his dearest love.