I Brought a Greatsword to Hogwarts

John Wick, a time-traveling 'pencil killer' with a dark past, finds his unique skills utterly obsolete when an owl delivers a letter to Hogwarts. Years of mastering close-quarters combat against muggle threats mean nothing in a world of spell-slinging wizards and unseen dangers. His meticulous murder methods are useless. But just as despair sets in, his dormant LitRPG System awakens, revealing a panel of combat proficiencies now ready to evolve. More shocking still, his new wand feels less like a tool for whimsical magic and more like a 'warrior's weapon,' a conduit for the brutal efficiency he once commanded. The system's first mission: master a year at Hogwarts. Yet, as he prepares to enter the Great Hall, John realizes the true game isn't just learning spells. It's about twisting them, weaponizing them, and turning the wizarding world into his deadliest arena. Will Hogwarts be ready for a wizard who fights like a hitman?