𝑅𝑒𝑔𝑢𝑙𝑢𝑠 𝐵𝑙𝑎𝑐𝑘 𝑥 𝐹𝑒𝑚𝑎𝑙𝑒 𝑟𝑒𝑎𝑑𝑒𝑟 Y/n's family moved to England when she was little, and in desperate need of someone to talk to her mother befriended Walburga Black, without knowing what she was getting herself into. Thanks to this "friendship" y/n basically grew up with the black brothers, being the same age as Regulus and just a year younger than Sirius they quickly got along, but Sirius constantly excluded Regulus, leaving him behind. Once they entered Hogwarts and after years of being left out, Regulus finally decides to act on his obsession towards y/n Ps. There's so much of Sirius you might consider this a Sirius fic as well
6 parts