The Skripalsky brothers. Pavel and Alexander.

The hunt for witches and magicians in modern Russia has yet to end. But it's conducted secretly, by a small underground organization, commonly considered a mere small-time detective agency. The business has been passed down from father to son for many generations. However, it's impossible to completely eradicate black magic. There's an artifact that transmits and accumulates the powers of a witch or mage, assisting them with their witchcraft. Hunters don't know what this artifact is. They've never even laid eyes on it. But it's believed that if they do, they'll immediately recognize it. One of the last mages dies a natural death. He leaves his shop, "Magic Stones," to his granddaughter. It was only technically magical, to hide behind the guise of a jewelry store. And to keep hunters from prying too much. It was believed that all witches and mages shopped there. You are the very granddaughter who was so quickly dumped with the store of stones and witchcraft paraphernalia. And you only recently began to fully study magic from an old book and with the help of a black cat, who served not only as a guide into the world of magic and an excellent companion for the witch and wizards, but also as the keeper of this store. And then, one of your humble days, a couple of men drop in. Strict suits, coats, and piercing gazes scanning the store shelves. "Good afternoon, my dear, could you give us some advice?" one of them began, speaking kindly and smiling at you. "Hunters. Both of them," flashed through your mind. Which meant you couldn't even hint at anything more serious...