Arcane Sovereign: Reborn as the Master of Magic

Kai Thornwood was your average fanfiction enthusiast, spending late nights reading stories set in the wizarding world of Harry Potter. But fate has a funny way of making fiction reality. After a tragic accident, Kai finds himself reborn in the Wizarding World he once idolized-only this time, he's the heir to the most ancient and noble house of Thornwood, a family long lost to the sands of time. Gifted with a unique system that allows him to learn and master spells from any universe, Kai Thornwood is no ordinary wizard. He's overpowered. And he's ready to rewrite history.

Thrust into a world of intrigue, magic, and danger, Kai is betrothed to Daphne Greengrass, the cold yet enchanting pureblood heiress, and soon becomes a secret ally to Harry Potter. But with his knowledge of the canon timeline and his newfound powers, Kai knows he must do more than watch history unfold-he must reshape it. With powers beyond even Voldemort's comprehension, can Kai become the saviour of the wizarding world and help Harry become the legend he was meant to be? Or will his interference break the very fabric of reality?

Pic, not mine. I just got it on Google. All copyright go to their respective authors. This story is mine, and I have taken the story from webnovel if you want to check it out.