[Rei's chant rises in pitch, a passionate and throaty recital of prayer. Heat swirls up around her, magic visible to anyone now, unlike the invisible barrier the two of them have put up. The creature's eyes flicker from Yuri to Rei and widen slightly. It skitters backwards, hissing and trying to disappear, but instead of passing through a wall, it bumps into it.

Confused, it lets out a shriek of fury and flies at the barrier...]

Release me!!!!

[Blue sparks ripple out from the wall, looking for all the world like ripples on a pond, and it holds. Rei's fingers reach out, a flicking gesture as power gathers there, orange and blue flames mingling together...and for an instant there's a pressure to the room. Weight, like gravity itself is intensifying, and then the spell takes the creature by the throat. Chains of flame bind it, slowly pressing inward, and Rei's able to slow her chant and take a breath.]

That...that got it. It's bound for the moment, and my spell will finish it so long as it stays put.

[Nothing more to worry about...]

Just keep up your chanting, keep it from running.