Spiral Zone [English], an hentai doujinshi parodying the Highschool DxD series, by Mutou Keiji
For some unknown reason, Rias, one of the Highschool DxD girls, has to let two guys have their way with her. She expresses resentment, but obeys nonetheless, and then a threesome begins.
I can’t say if it is relative to events in the anime/manga/novel, no idea really, or earlier hentai volumes, was the girl blackmailed, hypnotized? Here, it’s a “girl is forced to consent to having sex, and hates enjoying it” situation.
At least, the drawings are pleasant, in my eyes. Side note, I went and retouched the images, bringing back grayscale and soothening the dirty spotty surfaces.
Thanks to whoever has released the doujinshi! The English and typesetting isn’t perfect, but, hey, it’s better than nothing and you don’t look a gift horse in the mouth.