A Fuantei doujin from Reitaisai 14. A sequel to the previous Junko/Reisen doujin he did, though it could probably be read standalone.
Translated by BlastingNaba on danbooru, and then seemingly edited by NNescio. Most of those changes were good, but there was one truly baffling change where NNescio changed a line to, and I quote, "So, what happened to your vexing goldfish poop prowler pair?". I don't know what they meant by that, but I went ahead and used BlastingNaba's translation for that line because, well, what the fuck?
Anyway, translation is here: https://ouo.io/3o0wf
Raw is here: http://dl.hentaiknight.work/?l=e-hentai/g/1166773/d228d6bd83/
Previous story in this series here: http://e-hentai.fbk.tokyo/index/g/1470596/250b714f85/

I'm... struggling to find much of an online presence for Fuantei, now that I'm looking. Looks like they dropped off the grid at some point. Komedoron's twitter is still around, but unused.
https://viid.me/9MeVA

https://www.melonbooks.co.jp/detail/detail.php?product_id=217885