Octavius Black, a wizard born into the prestigious pure-blood family: The Blacks. Son of the Black couple: Druella Black and Cygnus Black III, and brother to three beautiful women: Bellatrix, Andromeda, and Narcissa. His training nights with his sisters were always exhausting, and he wouldn't allow them to marry into any other noble house; no one would have control over their bodies except him. Malfoy? A weak and dull wizard who follows another weak guy; Edward? A Muggle-born who doesn't deserve his sister's hand; Voldemort? Too weak to be a Dark Lord, so he would assume the position masterfully.
The author used the Boruto material and I hate Boruto, but I'll still give it few days worth of power stones for the originality. Keep up the good work. Keep an open mind and be bold with your ideas. That's what a fanfic is all about.