Starting at Hogwarts, I Build a Magic Empire Across the Myriad Worlds

When a science PhD transmigrates into Hogwarts, he discovers that magic is just another form of energy--as long as there's a theory, it can be quantified, replicated, and enhanced!

Starting from analyzing wand structure, to developing magic circuits and energy arrays, he ushers the wizarding world into an era of "techno-magic."

Voldemort is backhanded off to a research institute by him, and Dumbledore begs him to give a public lecture on "Magical Physics."

However, this is only the beginning--when he breaks the planar barrier, new worlds descend one after another:

In the Middle-earth of The Lord of the Rings, he suppresses Sauron single-handedly;

On the continent of The Witcher, he fuses magic and runes through alchemy;

In the Marvel Universe, he even makes Tony Stark come to him for inspiration;

After Harry Potter, he will eventually become--the supreme god of magic across the myriad worlds!

Myriad Worlds Genre, Academic Overachiever Genre, Magic Technology, Power Fantasy Progression, Multi-World Transmigration, Harem + Conquest Line