My Character Card Is a Mafia Heiress

[The guide to reading this story is at the bottom of the blurb, please check it out!] -- Blurb -- Suzhu is a game tester. She tried out a romance game called Love and Mafia. All of her romance targets are Mafiosi, divided between two factions: Yokohama Port Mafia and the Sicilian Vongola. * [Dear player Suzhu, congratulations on drawing an SSSS-rank character card: the granddaughter of the former boss of Yokohama's Port Mafia.] [Profile: You are the most elite young lady around. Your mother is the only daughter of the former boss and his first wife. Your father is the chairman of a conglomerate rich enough to rival a nation, and your grandfather is the boss of Sicily's number-one Mafia family.] [You suffer from a rare illness called V-Element Deficiency. To treat it, you have returned to Yokohama, where the current boss, Mr. Mori, welcomes you home.] [Debuff: V-Element Deficiency (incurable)] [Description: You must absorb V-elements from the blood and other bodily fluids of other ability users. Your S-element can mark other people.] Suzhu: This illness sounds seriously messed up, what the heck! Suzhu: Um... A top-tier young lady with money, power, beauty, and combat strength? That's pretty much cheating at everything... --Hell yeah! I get to be a Mary Sue in a game! Time to live the most exhilarating life ever! * Suzhu has a collection-of-CG-images obsession, and her original goal was honestly just to unlock CGs. When she realized some people were real jerks, she decided to give them a taste of their own medicine. After all, she was an even bigger jerk. In the end, she raised their affection levels to sky-high numbers. She even rose to the top and became the Queen of the Mafia. They all loved her and wanted to follow her. * The Port Mafia boss lost his reason and his obsession with profit because of her. He did pointless things for her, hoping only that she would notice him. The youngest executive, who always wore a false smile, showed her his true, dark, vulnerable side alone, trying to win her over. The gravity-wielding boy's bright, star-like blue eyes were filled with her. Just hearing her call his name brought him back to his senses from his corrupted state. The Vongola's Sky became bright because of her, and dark because of her, too. The Varia's carefree young illusionist and their proud Sword Emperor willingly became her guards. It didn't matter. When she got tired of the game, she quit and went home. * Reader's Guide: 1. The heroine puts reason above all else and carries the secret identity of a frail heiress. She never gets found out throughout the story (though she may be exposed to one character in the finale), and has a whole lot of one-sided admirers. 2. A slow burn, medium-length novel, and a Mary Sue story. Bungo Stray Dogs + Vongola. Click to see this brat getting close with handsome guys. 3. Everyone gets a happy ending, though the process is a chaotic jumble (it's pretty messy, so pure-romance fans should read with caution). The final pairing is one-on-one, but the CP hasn't been decided yet. Feel free to vote for your favorite male lead. [Important note: The Yokohama in this story is a heavily altered version, larger and more prosperous than the one in the original Bungo Stray Dogs.] [Also, I politely decline writing advice. I'm a rookie with very limited brainpower and writing skills, so it's only natural if you think the story is unreasonable or not to your taste. I hope you find something you enjoy soon.] Theme: Live as your true self.