Mattheo Riddle had been dreaming about the same girl for as long as he could remember. From the moment he stepped into Hogwarts as a first-year to the moment he returned for his sixth year, she had appeared in his dreams without fail. The dreams were never quite the same, yet somehow, she always was. Sometimes they were filled with laughter and ridiculous conversations, sometimes arguments that left him waking up irritated, and other times they were nothing more than quiet moments spent together, sitting somewhere peaceful while neither of them needed to say a word. There was always something strangely familiar about her, as though Mattheo had known her long before he ever knew her name. He never told Draco, Blaise, Theo, or anyone else about the dreams. They were his secret, something he selfishly kept to himself because, in his mind, she belonged to him. His girl. Even if she wasn’t real. Even if she existed only in some strange corner of his dreams. Except, she was real. And Mattheo was about to find that out in the most impossible way imaginable. It was the beginning of sixth year, and the Great Hall was filled with the usual chaos of the Sorting Ceremony as the new first-years nervously waited for their names to be called. Mattheo was barely paying attention until the castle suddenly seemed to crack open above them, magic twisting through the ceiling before a girl came tumbling out of thin air. She shouldn’t have been able to Apparate inside Hogwarts. No one should have been able to Apparate inside Hogwarts. Yet somehow, the castle had allowed her through, as though it recognized her and had decided she belonged there. The explanation was almost absurdly simple: technically, she was a Hogwarts student. Her mother was British, her magical records were already tied to the school, and apparently Hogwarts had decided that was enough to let its newest student bypass every rule that should have stopped her. Y/N landed in the middle of the Great Hall, confused, diso