Uta, a teenage game developer, is dragged into his own NTR-themed eroge game along with his girlfriend, Yuimaru. However, fate takes a bizarre turn when the world's system completely reverses their roles. Uta, who is physically weak, is reborn as the "Heroine" with a rare Holy Bloodline, turning him into the ultimate prize that the world's powerful factions desperately want to claim. Meanwhile, Yuimaru must step into the shoes of the "Hero," sent to a brutal military academy to become strong enough to protect her boyfriend. Armed only with an absurdly high intelligence (INT) stat and his knowledge of the game's mechanics, Uta must outsmart aggressive rivals and dodge dangerous NTR flags. Separated by circumstances but bound by their vows, can Uta and Yuimaru defy the game's corrupted system and maintain their love to achieve a Pure Love Ending?