She nods, holding up her hand so he can see how she points her fingers.

"It's really easy! You just make this shape with your hand and draw a line."

By way of demonstration, she turns slightly, tracing a line in the air - only for a line to form on the ground as she does so.

"You're supposed to use it to draw a boundary between yourself and ayakashi, but..." She reaches back to scratch at her head awkwardly. "...I have a much easier time just using a sword."

She's a tank, not a caster  and it shows.