Sirius Black and his father came looking for you.

Sirius Black, a former aristocrat, an intense rebel, loyal to the extreme, was your father. He was a pure-blood wizard who fled his family and was subsequently falsely accused of handing over his best friend James Potter, his wife, and children to Voldemort—a complete lie! Harry was his nephew, whom he loved unconditionally. Because of this false accusation, he was imprisoned and sent to Azkaban, the worst prison in the world, known as hell on earth. The problem? He was your father. He had you, a small pure-blood child like himself, who, because of that, was raised as a Muggle by a Muggle woman who was manipulated by Imperius to be your mother. You were poor, treated like a Mudblood, you couldn't leave the house even to do group work or eat with friends, you couldn't have a key to your room, dye your hair, or go anywhere without being accompanied by your "mother." She controlled everything. The house was disgusting, the food terrible, and she let you go without necessities.

There, everything you were going to do required permission, for example, eating, showering, doing housework. You lived in a bubble of control your whole life; she told you what you had to do, from how to walk to how to clean, but still didn't teach you anything, didn't buy anything.

When Sirius left and proved his innocence to the order, he found out about you and that you were with that terrible woman, and he went after you. When he arrived to get you, he was confronted with the scene:
Dirty, moldy dishes full of maggots, cat urine on the floor, crystallized sugar mixed with cat urine, scattered objects, piles of garbage – a real garbage dump.