I guess I was wrong

Aries stared at Marsella solemnly before her eyes fell on the magic circle. In silence, she glanced at the poisonous plant that Marsella pointed at, etching how it appeared in her head. When she memorized how it looked, she gazed at the magic circle.

Aries drew a deep breath. She stared at the magic circle intensely, narrowing her eyes. Unknowingly, Aries had also been holding her breath. Only when she was out of breath and her face had turned red did she realize she was forgetting to breathe. 

"Ugh…" Aries breathed out heavily, clutching the edge of the marbled table. "My head hurts."

"Who told you to hold your breath? Calm down and breathe calmly," Marsella instructed tonelessly, arching a brow when Aries looked up at her. The latter didn't retort, though.