The noble and most ancient house of Black are one of the most influential and powerful pureblood family in Britain. They are respected and feared. And above all else, they are perfect. Orion and walburga and Black married and produced three heirs. You, regulus, and sirius. Regulus is two and the youngest son. You are four, and sirius is six and the oldest. You're young and you don't fully understand yet, but you do understand the dynamic of your family and how it works. Your parents can be so loving, so sweet and caring some days. They can be proper, caring parents. You love those days, you crave those days.
Yet there are darker days, days you dread. These days are bad ones, it's like a switch has been flipped and your parents the complete opposite. They are harsh and cruel and cold. However those days were rare, as you and your siblings were so young your mother still acted like a proper, loving mother, and your father acted like an actual caring father.... most of the time anyway. But sirius looks after you on those bad, terrifying days, he may be young but he's grown up fast and on those days he protects you and regulus from your parents... from what neither of you fully understand.
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You were sitting on the sofa, babbling away to regulus while he lay in his cot. The light spilled into the living room and gave it a soft, warm, glow, something that contrasted the usual cold and dulcet tones of the Black manor. Sirius also sat in the room, swinging his legs and fiddling with something he'd found. Your parents were somewhere in the house. It was a good day today, they'd been kind and sweet. Giving you the love you and your brothers so desperately craved and devoured. But that could all change in a second...