Ok, what I can see on this image: how needy Exia's body looks yet her smile seems genuine, showing how she knows this is but a momentary pleasure, that Mostima will leave eventually, but for now she is happy with what she has.
On Mostima's side, her body shows how much she want to return the hug, yet she doesn't. At the same time, she isn't smiling, as if she is regreting what she eventually has to do.
A beautiful piece full of emotions.