Trapped in a Dating Sim: The World of Otome Games Is Tough for Mobs

Leon Fou Bartfort, a thoroughly exhausted Japanese salaryman, dies from sheer exhaustion after being blackmailed into completing an unforgiving otome video game by his manipulative sister. Reincarnated as a minor background character—a "mob"—named Leon in that exact game’s universe, he resolves to live a quiet, peaceful life. The setting is a matriarchal dystopia where wealthy noblewomen hold absolute power, and the academy's male students are treated as disposable, romantic playthings for the arrogant Crown Prince and his privileged clique of male cronies.Leon’s peaceful aspirations are immediately shattered when his greedy parents attempt to force him into a loveless marriage with an aging, grotesque noblewoman for financial gain. Desperate to secure his independence, Leon sneaks into the imperial labyrinth to unearth ancient lost technology. There, he forms a fateful bond with Luxion, a sentient, sarcastic AI companion from a forgotten civilization. Armed with a devastatingly powerful cheat-item mech suit, Luxion helps Leon easily conquer the dungeon, earning him a minor barony and enough wealth to escape his family's clutches.Enrolled at the prestigious academy to maintain a low profile, Leon repeatedly fails to stay out of trouble. His sharp tongue and disdain for the ruling elite continually draw him into high-stakes conflicts with the game's main protagonists. He inadvertently disrupts the intended romantic plots of the game's original heroine, Marie Fou Lafan, an ambitious reincarnator who aggressively steals the affection of the Crown Prince and his cronies to secure her own luxurious future. Unlike the original game where the heroine saves the day, Marie’s selfish interventions severely destabilize the kingdom's delicate political and magical ecosystem, plunging the realm toward a catastrophic war.As tensions escalate, a ruthless neighboring nation launches a massive invasion, exploiting the kingdom’s internal corruption and the spoiled princes' incompetence. Driven by a pragmatic desire to protect his hard-earned property and lifestyle—rather than any noble heroism—Leon pilots his supreme mech into frontline combat. Utilizing overwhelming futuristic firepower, he single-handedly decimates the invading forces, turning the tide of the war. In the aftermath, Leon exposes Marie's true nature and prevents the total collapse of society. Despite saving the entire nation, Leon rejects high political office, longing only for the quiet rural life he was originally promised, even as the grateful, bewildered royals and reformed heroines continue to disrupt his hard-earned peace with their unwanted attention.