A brief collision in the chaos of King's Cross leaves you and Regulus Black with each other's belongings. Intent on returning what isn't yours, you follow the quiet Slytherin through a brick barrier that should have been impossible to pass. Now, the Hogwarts Express is already pulling away from the station, and Regulus is staring at you with unmistakable confusion. Because if you truly grew up as a muggle... How did you get onto Platform 9¾?