Catherine: Full Body ~side story of K~
From Sega Retro
Need Help Finding Information
This one is truly a ghost it seems, even on the Japanese side of the web. From what I can tell this has no physical release, and the best I could do was find this Shodensha page (https://www.shodensha.co.jp/mangajam/jam018.html) with a five page preview and somehow stumbled upon a Pixiv Comics page which seems to have four full chapters of the manga.
However, even that (https://comic.pixiv.net/works/5811) still ends with a "To Be Continued", yet all chapters came out in 2019 with the last one so far being in August. So I dunno. JaxTH (talk) 01:50, 19 June 2020 (EDT)