Thrust into a game-like world, Serina, a former delinquent known as the 'Crimson Rose' for her fierce combat skills, faces a bizarre ultimatum: romance a yandere or face demise. Preferring punches to love confessions, Serina struggles with her zero romance expertise in her new role as a well-regarded game heroine. As she navigates the investigation of a critical incident to safeguard her life, she must also navigate the complexities of falling in love, unbeknownst to herself. Serina, the Earl's daughter with a turbulent past, is adored by those around her in her pursuit of happiness.