Might I ask what you're basing that on, and if you've checked the MEGA and Pixeldrain links posted here? I'm curious how you found that out, as if it doesn't exist, I'd like to rule that out for certain... tis a beautiful bun and beautiful pose, and with the artist, it wouldn't make sense to only make a nude front and a clothed back, not typical of them
Edit: The mega links are only in the OP, and despite it saying so, they are not from 24-01-19, they are / have content from 24-03-xx