The former granddaughter of a yakuza boss dies and is reincarnated as Francesca Calvino, the protagonist of a fantasy mafia dating sim she played in her previous life. In this new world, five noble crime families serve the king, and Francesca is the daughter of the don of one of the most powerful among them. Having lived a friendless existence under the thumb of organized crime before, her only goal in this second chance is to achieve a peaceful, normal life far removed from the underworld.

Armed with knowledge of the game’s plot, she devises a simple plan: break off her engagement to Leonardo Aldini, the young head of a rival family and the game’s primary villain. She expects him to be cruel and manipulative, but her first real test comes when he kidnaps her the day before school starts. To his surprise, Francesca handles the situation with an unshakable composure born from her yakuza upbringing, easily foiling his plans. Rather than being deterred, Leonardo becomes intensely fascinated and refuses to end their engagement, instead pursuing her with even greater determination.

The story is set in a European-style kingdom where those with noble blood can use magic, and the heirs of the five mafia families attend a prestigious academy. Francesca’s previous life as a yakuza heiress gave her street smarts and a familiarity with violence that the original game’s sheltered heroine lacked, making her unpredictable. As she tries to stay out of the main story, a brewing mob war and Leonardo’s scheming keep pulling her back in. During the Full Moon Party, chaos erupts and Francesca is forced to team up with Riccardo Ceranova, the honorable heir of another mafia family, to save the guests. This alliance risks exposing her knowledge of future events and jeopardizes her quest for a quiet life.

Throughout the series, Francesca questions whether Leonardo is truly the remorseless villain the game portrayed or if there is more to him. He proposes an unexpected arrangement, suggesting they become friends, and Francesca begins to wonder if the manipulative crime lord might be what she has always dreamed of having. The narrative follows her attempts to rewrite her fate, avoid deadly ends, and navigate the thin line between enemies and lovers as her actions continue to attract the attention of the one man she was determined to escape.