My Hogwarts System: The Strongest Black Heir

Orphaned, burdened by a crumbling family legacy, and targeted by greedy pure-blood families, three-year-old Phineas Black is left with nothing but a dilapidated mansion and two doomed brothers. The weight of the Ancient and Most Noble House of Black rests squarely on his tiny shoulders, with enemies lurking at every shadow, ready to pick apart his inheritance. But Phineas isn't a normal child. He's a transmigrator with foreknowledge of this world's deadliest secrets. And thankfully, he awakened 'The Strongest Wizard System'—a cheat code to unparalleled magical power. The catch? It only fully activates upon his Hogwarts admission letter. Can this pint-sized prodigy manipulate the greatest wizards, rebuild his house, and reshape a destiny he already knows, or will the future prove too resilient for even a system-wielder to overcome?