source- https://www.dlsite.com/maniax/circle/profile/=/maker_id/RG14831.html
Artist- https://www.pixiv.net/en/users/29088547/artworks

premise- "Onmyo Ama" (Yin-Yang Ama Divers) are female divers tasked with repelling demons that invade from the sea
. After receiving reports of a mysterious sea cucumber-like "thing," two divers go to investigate but never return.
When the remaining divers rush to their aid, they find that the two have been possessed by demons!
Forced to fight their possessed comrades...
A hand-to-hand combat between divers
Fighting - Relatively mild (no bleeding) ryona
Catfight
23 pages including cover (22 pages of main story)
Grayscale Main story
without text included