Harry Potter and the Knight King of Hogwarts

Luna Pendragon, a legendary graduate of Hogwarts, possessing EX-level magic power and ancient rune inheritance, returns to his alma mater as the youngest professor in history, taking charge of the crisis-ridden Defense Against the Dark Arts instructor. The mysterious assistant Artoria who travels with him is elegant and powerful, but her true identity is actually the King of British Knights who traveled across time and space. When Voldemort's shadow quietly resurrected in the magical world, undercurrents surged under the calm of Hogwarts. Luna's innovative teaching touched the nerves of the pure-blood nobles, and the appearance of Artoria triggered an echo of fate in the blood of the descendants of the Knights of the Round Table thousands of years ago. The magical confrontation in the classroom and the secrets deep in the castle all point to an older secret. On this chessboard where magic, courage and destiny are intertwined, the professor with the power of the stars and the king wielding the holy sword stand side by side. How will they illuminate the darkness and protect this thousand-year-old castle? A legend that transcends magic and time and space begins here.