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

premise-Onmyoama are shrine maidens who repel yokai (supernatural beings) that come from the sea at the water's edge.
Four Onmyoama challenge a yokai that attacks a certain beach, but are defeated one after another .
Contains depictions of female muscles and relatively mild ryona (no blood).
19 pages including cover (+ textless version of the main story included) - main story in grayscale.