There isn't much direct meaning to this art, so I guess it's metaphorical in a way.

I'll explain what it really means; the relation (or rather, countless generations) between Nene and Samurai Asshole is represented by the flesh and blood connected in the background. As for what it means for the characters here, I suppose Nene is both taken aback by how many ties there are between each patch of flesh and blood, while also crying due to missing Samurai, who, despite being right behind her, is nearly unrecognizable due to how long they truly are apart (and his face not even be the same anymore). At the very least, he can massage her shoulders as she silently cries.

Nene wants to see Samurai again, and he reaches for her...

And yet the real distance between them is infinite.

...If you can't tell, I love putting these two through sad situations. Don't ask why lol. Feel free to suggest what you also perceive from this rather abstract piece and its background.