Yuya looks between the shadow and the mound before glancing around the room. There's probably a table lamp somewhere. Yuya hops down from the bench to scout one out, since Reira sure isn't big enough to carry one.

He ends up having to awkwardlu unplug it and grab the neck with his mouth to carry it over, but it's doable. Reira will have to direct him where to angle it, though.