Takumi is a typical high school student who suddenly finds himself transported to a fantasy world filled with magic and danger. There, he meets Ria, a young woman who tells him that he has been chosen as the World Breaker, with the power to break curses that have been placed on the land by an evil sorcerer.
As Takumi and Ria journey deeper into the cursed land, Takumi realizes the gravity of his powers and the challenges that lay ahead. He must use his strength and cunning to break through the sorcerer's barriers and free the land from darkness. Along the way, Takumi and Ria develop a close bond and eventually fall in love.
However, their journey is not without danger. The sorcerer will stop at nothing to protect the curses, and Takumi must face him in a fierce battle to break the final curse and save the world. In the end, Takumi emerges victorious, and he and Ria are hailed as heroes.
But their journey is far from over, as Takumi realizes that he has found a new home in this world and must continue to use his powers to protect it from future threats. And with Ria by his side, he knows that he can overcome any challenge that comes their way.