anything on the level of Shishunki na Adam? one of the main girls in that is literally almost impregnated by an incubus monster but she was lucky enough not to conceive during the act. that manga / LN has quite a bit of rape and isn't afraid to push the boundries. kinda looking for more works like it.
wow what a list, many of them look promising. i'll give them a read and let you know what i thought.
btw, tried looking for Otome x Chigiri since forever. i can't seem to find a host or downloads for it any more. this is one of the few that got a full translation but seems to be lost with time.
edit: i went with your highest recommendation "Seishokuki". my god, this is a hentai through and through lol. how did this get published and is on 9 volumes on-going, amazing. the MC was even deflowered by an alian queen futa. this is hot. looks like my standards have been raised. i dont know if anything will ever come close to the hentai levels of this.
Well in terms of hentai, there is always MAEDA Toshio who established the genre with works like Urotsuki Douji and La Blue Girl ,although personally i do not like his art, but the anime hentai movies/ovas are good adaptions for their age. For more recent examples i would recommend Pandra and its sequel by ERECT Sawaru maybe Brandish and the one i already mentioned The Parasite Doctor Suzune as i love Haruki's art. On a side note, im trying to find Crack Hound , i had found some chapters of it before some years, and its brutal, it has everything! (zombies-demons-slime monsters and a good art to accompany that)
________________ In a time of universal deceit telling the truth is a revolutionary act. George Orwell