Yotsuyu's brow furrowed at that. "They sound more like our eikons--primals. They are the same thing, with two names. The Empire calls them eikons, and outlaws them. The Eorzeans call them primals, and they do their very best to prevent them from being summoned, as they play merry havoc with the ambient aether."

Which was likely why the Empire also outlawed them, but if they eschewed magic, Yotsuyu was not entirely certain as to the why of it.

"They are also large, at least twice the height of a man, or so I have heard. So was Tsukuyomi." At that, she nodded--to herself, mostly.