Mana  

The classroom was frozen, the silence broken only by the faint hum of the magical console. Shiki had just blown their minds again. Not only could he manipulate chi elements with ease, but he'd also shown he could switch between energy systems like it was nothing. The students stared at him, jaws dropped, eyes wide, as if they'd just seen the impossible.

"Does that answer your question, Mr. Areyos?" Shiki asked, a confident smile on his lips.

Areyos blinked, still dazed. "Yeah… yeah, it answers it perfectly," he said, his voice a bit shaky.

"Good. Let's move to the demonstration. Miss Arwyna, cast the 'water ball' spell, please," Shiki said.

"Okay," Arwyna replied. She extended her hands, and a blue magical circle appeared, its runes spinning slowly. A sphere of water formed in the center, floating in the air, smooth and shiny.