[Did you expect Axel to answer directly? But anyway.
He watches Kaworu tend to his fingers with undivided attention and he's honestly surprised that there's some...technique there despite Kaworu not having experience. At any rate, it's attractive to some level and Axel ends up staring even when those fingers are well beyond prepared. Soon, however, he does reach out, grabbing the other male's wrist, stalling him.]
...Sit up a little. [Whether or not Kaworu follows that instruction Axel is already pulling on that hand and sliding it behind him, positioning both fingers somewhere near his entrance. It may be difficult to reach in this position, but they'll have to see how it goes.]