^^ Except that given the angle, you wouldn't normally expect it to be seen. The artist would have wanted to make it conspicuously unseen if that were the case.
I think @AToastyCoyote is closer to the intended meaning, except that I think it involves both of them. Note that they're both sweating, and together the two have eight limbs.
So ... what's your favorite flavor of Dianakko - Diana-top, Akko-top, or switch? Kinda go for Akko-top myself because flustered Diana is irresistable, but it's all good.