In this doujinshi, two female characters from the Kakegurui series, Jabami Yumeko and Saotome Mari, lose so hard at gambling (the central focus of the series) that they become something like sexual pets, available for use and for purchase. One of the two girls, Yumeko, is bought by (apparently) a classmate who likes her, so things go well, while the other girl (a fair-headed tsundere-like twintailed girl, yum) is grabbed by a group of hard-boiled students who don’t take no for an answer.
It looks like happy sex even for the twintails girl (yeah, oddly perhaps), and the drawings have a unique style, as if Inomaru kept on getting better and better over the years, it’s real eye candy
Thanks to Doujin-Moe for this release!
Edit: another mangaka, Maidoll, has written another hentai doujinshi with almost the same story line, huhu. If that interests you, please check out Losers ~ Kachiku Ni Naru Onna
For much more, please see The list of all the works by Inomaru on Hentairules!