The tower occupied a smaller area than the main building but was greater in height. After landing on the top floor, Evelyn opened the roof door and descended the seemingly endless spiral staircase until they reached somewhere near the floor in the middle. After a bemused moment, she suddenly nodded to herself.

“I see,” she murmured while placing her palms on the dusty wall. “I was wondering why I didn’t see the core of the summoning magic even though I could sense a strong reaction… The wall was made of magic stones.”

Chi-Woo recalled that Eshnunna had said something similar.

“Does that mean this whole tower was used as a catalyst?”

“Something like that, but ultimately different.” Evelyn looked back to Chi-Woo and knocked on the tower’s wall with a fist.

“This tower itself is acting as the core.”

“?”

“And the buildings within its range are probably its catalyst.”

Chi-Woo gaped slightly. In other words, the entire academy—or more specifically, places where there were magic stones—was basically the summoning circle.

“…That’s massive,” Chi-Woo muttered.

“So what?” Evelyn said indifferently. She seemed strangely confident in this field.

“Could you return things to normal?”

“Who do you think you’re talking to?” Evelyn snorted, seemingly telling Chi-Woo not to look down on her with her gaze.

Evelyn’s logic was simple. The center of the academy had been opened to another world due to the summoning magic; to turn things back to normal, one had to reverse the process that had brought to bear said magic. That was the safest and the most effective method.

The only thing they had to worry about now was whether anyone...