Give it a little more time, and Erwin probably will just collapse on Levi. For now, though, the pillows help, and he breathes a word of thanks against Levi's neck. If this is going to be a recurring thing, they're going to need some wedge-shaped pillows to prop up Erwin's right side.

Erwin pays close attention to every sound Levi makes, every motion of his hand on the back of Erwin's head. He doesn't use his teeth on him, but his lips press harder, more insistent, as he works his way back and forth across Levi's collarbones. As he does, Erwin shifts his legs, moving them so they're not completely pinning Levi's any longer. Then, using his knee, he tries to nudge one of Levi's legs up, into a bent knee position, between Erwin's legs.