The Wizarding Hero: Merlin.

In a future where quirks define worth and heroes soar through cities of steel and light, the ancient world of magic has faded into myth.
Hidden deep beneath the surface, the last remnants of the arcane still endure - bound by secrecy, watched over by the silent eyes of The International Confederation of Wizards.

When the balance between quirk and mana begins to waver, the Confederation makes a desperate choice: to send one of their own into the modern age of heroes.
Born of both muggle and magic, the chosen mage carries two worlds within him - logic and legend, reason and ritual.
Now, under the guise of a hero-in-training, he walks among the gifted youth of U.A. High, learning to understand their power... and to remind them of the one they've forgotten.

In a society built on mutations, he must prove that true strength isn't inherited - it's understood.
Especially, when the boundaries between science and sorcery begin to blur, he'll face the question that will define both worlds:

Can magic survive in the age of heroes... or will it be reborn through him?

(Wizard male reader x My hero academia)