>>2704048I can confirm this happens, but the man himself said not to spread it so I'm not going to post it other than like this as vague proof.
There are apparently 200 copies in the wild and someone just sold one for 55,000 yen on Mercari, so I don't think it's getting scanned anytime soon, just like the other prize-only doujinshi based on Triage X and Fire Fire Fire a few years ago.