A Mastermind? No, I'm just the Live-In Son-in-Law

Chapter 53: The Demon King



“B-Brother, are you...”

Cecil burst into the room, panting hard, and her eyes widened as soon as she saw me standing there. She hurried forward—

“Eek.”

—but froze in place after only a few steps, stunned by the gruesome scene before her.

Well, to be fair, it would be strange not to react like that, considering the heavy stench of blood, the black mana clinging to the walls, the ominous magic circle drawn on the floor, and me and Lunelle standing at the center of it all.

It looked like the end of the world.

“...How did you get in here?”

“T-That’s, well...”

What stood out most was how Cecil had gotten past the black mages’ seal to enter this place.

From what I understood, their seal didn’t just block physical entry—it warped space itself.

Those unauthorized would be sent back to the original space, while those approved would be guided into a hidden one.

In simpler terms, it created a shadowed space—a pocket dimension only they could access.

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