Every time I see this picture people say that it is metamorphosis. I have a paperback copy and this isn’t in it. Likewise, I went to nhentai.net and double checked. Still not in it. What is this from? Is there a sequel or prequel that I am not aware of?

Am I overlooking it somewhere?

Honestly that fucking doujin fucked me up. Saw someone link the code in a post like this once and I gave it a skim. It’s fucked