Thirty-year-old Misora Kikuna works as a producer for a new romance visual game called The Seven-colored Moon. Her excitement to meet the idol group Polaris 7, who are performing the game's theme song, turns to tragedy when the group's car is involved in a horrific accident. In her shock, Misora falls down a flight of stairs and loses consciousness. She awakens not in a hospital, but inside the world of the very game she helped create. She now inhabits the body of Sophia, the story's designated villainess and the fiancée of the villain prince, Eraldo. To her astonishment, Eraldo is the spitting image of L Myourenji, her favorite member of Polaris 7.

She quickly confirms that L has also been reincarnated into this fantasy realm as Prince Eraldo. Unlike the cold and tyrannical persona he presents to the public in the game, this Eraldo is actually the idol she adored. The prince's harsh demeanor turns out to be an act, a calculated "tyrant" character designed for the political and business intrigues of the kingdom's entertainment industry, mirroring the crafted public images of pop stars in the modern world. Now cast as the villainess in a world she designed, Misora must navigate the intricate plotlines of her own game. Armed with her insider knowledge, she aims to subvert Sophia's doomed fate and achieve a happy ending, all while flirting with the faux tyrant who was once the object of her fandom. The series explores how two people from the modern era use their understanding of show business and game mechanics to survive in a fantasy realm governed by those same rules. The manga, written and illustrated by Takarano Island, has been published in several compiled volumes as the story of their double isekai romance unfolds.