Making Money in Detective Conan by Impersonating Gin

[The title and blurb have been changed, but the core story remains the same] Xi Lingyue, who inherited a little magical talent, discovers after transmigrating into Detective Conan that all sorts of surprising (and alarming) souvenirs keep appearing in her magic lab. [The Silver-Haired Killer's Favorite Gun] Item effect: A gun with a strange power. It must be infused with magic to use. Item description: A magical handgun that can never hit an undercover agent. The next day, Xi Lingyue heads out and runs straight into the Black Organization hunting an undercover agent. They mistake her for one of their members, and Gin impatiently urges her to hurry up and shoot. Xi Lingyue: "..." With tears in her eyes, Xi Lingyue raises [The Silver-Haired Killer's Favorite Gun], aims at the cat-eyed undercover agent, and fires. The cat-eyed undercover agent collapses and doesn't get up. Gin tosses her a box of cash, satisfied, then leaves with the other members of the organization. Then Xi Lingyue stands there, holding a box of cash, facing the cat-eyed undercover agent, who has sat up looking utterly bewildered. Cat-eyed undercover agent: "?" Cat-eyed undercover agent: "!" [The Silver-Haired Killer's Black Fedora] Item effect: Put it on and you're a killer. It must be infused with magic to use. Item description: No one can tell whether you're Gin. Drawing on her experience from the last time she made money, Xi Lingyue puts on the fedora and boldly marches straight into the Black Organization! She uses a suitcase to make off with Gin's monthly expense reimbursement. She uses a cart to haul away Gin's remaining monthly supply of firearms and ammunition. She uses a car to drive away Gin's files on his monthly mission targets... She even plays cards and drinks with Rum, trading quips as they complain about the Black Organization's boss! Rum praises her warmly. "Gin, you're really likable today." Then he generously gives her a Rolls-Royce. Xi Lingyue scores a luxury car! And so Xi Lingyue drives the luxury car Rum gave her in and out of the Black Organization's base seven times, diligently playing the organization's model employee! Then she takes her carload of spoils and happily goes to make a deal with the cat-eyed undercover agent. The cat-eyed undercover agent codenamed Scotch counts out her money while looking at her as though he has something to say, then decides not to say it, then looks like he wants to say something again. Beside him, the blond, dark-skinned undercover agent codenamed Bourbon stares at the car packed full of stuff, looking as if his whole worldview has collapsed. Xi Lingyue pats her bulging wallet and gazes brightly at the new souvenirs. [The Silver-Haired Killer's Vintage Car], [The Silver-Haired Killer's Helicopter], [The Curly-Haired Police Officer's Sunglasses as a Thank-You Gift]... Huh? Wait, what is that last one? 1. The heroine knows a little magic. It's an original addition, not a crossover. The entire story is set in Detective Conan. 2. Police academy squad members and other characters who died in the original story will appear in unusual ways. 3. The pairing is with the blond, dark-skinned Furuya. Original additions. OOC warning. The heroine only remembers the general plot of Detective Conan. Theme: Stay true to your original intentions.