Pixiv: https://www.pixiv.net/member_illust.php?mode=medium&illust_id=47948051

I opened this without even looking at the title, her eyes, face, and joints immediately made me think of xelvy, but the thought slipped.
I get to the end, look at the artist tag, and see that it's actually him. Holy shit.

Base +6, homeodeath212 +6