Leon Fou Bartfort, a reincarnated office worker, finds himself transported into the world of an otome game he once despised. In this new reality, he inhabits the body of a minor noble’s son in a society dominated by women, where men are relegated to secondary roles. The world operates under the rules of the otome game "Love Sphere," where noblewomen compete for the affection of high-status male love interests. Leon, armed with knowledge of the game’s mechanics and events, resolves to navigate this unfair system to secure a comfortable life.

Leon’s primary advantage lies in his possession of an ancient, high-powered airship called Luxion, a sentient AI relic from a bygone era. This artifact grants him significant leverage in a world where technology is otherwise limited. Despite his low social standing, Leon uses his wit, Luxion’s capabilities, and his understanding of the game’s events to outmaneuver the nobility and the game’s predetermined outcomes. His actions often disrupt the expected flow of the story, creating ripple effects that challenge the established order.

The narrative centers on Leon’s interactions with key characters from the game, including the protagonist, Olivia, a commoner who becomes the central figure in the otome game’s romantic plotlines, and Angelica Rapha Redgrave, a noblewoman destined to become the game’s antagonist. Leon’s involvement alters their fates, as he intervenes to prevent Angelica’s downfall and supports Olivia in ways the original game did not anticipate. His pragmatic and often sarcastic demeanor contrasts sharply with the romanticized expectations of the otome game world, leading to both comedic and dramatic situations.

As the story progresses, Leon’s actions expose deeper societal issues, including the rigid class hierarchy and the oppressive expectations placed on women and men alike. The series explores themes of rebellion against predetermined roles, the consequences of disrupting established systems, and the complexities of relationships in a world governed by game-like rules. Leon’s journey is marked by his struggle to maintain his independence while navigating the political and social challenges of this unfamiliar world. The narrative balances humor, action, and social commentary, creating a story that subverts traditional otome game tropes while engaging with its unique setting.