Cassiopeia Black, Or most commonly known as the kindest Griffondor. Always helping the youngests, because of the motherly senses she developed with her little brother whose mother left after his birth. She's also a part of the Golden quartet but that's just a detail. But most importantly,, Sirius Black's biological daughter. Even if Regulus is her father in her heart. No Voldemort AU. I don't own the whole Harry Potter world just my oc's. Slow burn

"Sirius Blacks Forgotten Daughter" follows the story of Y/n, Sirius Black's overlooked daughter, who struggles with feelings of neglect and invisibility. When Sirius expresses his fondness for Harry, Y/n feels abandoned and retreats to her room, harboring a secret pain. Throughout the narrative, Y/n grapples with her identity and sense of belonging, culminating in a heart-wrenching confrontation with Sirius and her own feelings of being forgotten.