Mattheo Riddle’s final year at Hogwarts was meant to be about forgetting. After Y/N—the girl who held his shattered heart—died in a tragic accident, he turned to Theodore Nott’s black-market Oblivion Tabs. The pills numb the pain… and bring her back. Vivid, filthy, and only visible to him, Hallucination Y/N teases him in the corridors, straddles him in the common room, and whispers exactly how she wants him while his Slytherin crew (Theo, Draco, Lorenzo, Blaise, Pansy, and Astoria) drags him to parties and throws other girls at him to force him to move on. But unknown to everyone, Hermione Granger has been working alone. In a forbidden solo ritual at a misty Black Forest lake, she submerges one of Y/N’s most precious items beneath the new moon. The water answers — and the real Y/N steps out alive, whole, and exactly as she was before the accident. Now two versions of the love of his life exist. One only Mattheo can see, growing darker and more possessive with every pill. One real, desperate to reach him, forced to watch as he mistakes her for a drug-induced ghost. As common room fights erupt, jealous hookups spiral, and the line between reality and hallucination dissolves, Mattheo must choose before the pills destroy the miracle the lake delivered. A story of grief, addiction, found family, and a love that refuses to stay buried.