Gyakushuu 4

The latest installment in eroge maker ANIM's series of dark, sexy visual novel fantasies is here! Fans of tentacles, ahegao (sex-crazed faces), heroines in peril, sexual corruption and conquest, massive insertions, and other fantastical hardcore themes in eroge, will love this new story featuring an all new cast of characters (with a couple of recurring favorites in minor roles) in the tentacle-bursting disgrace scenarios that have come to define the series. An epic story in its own right, you'll be able to experience a tale of fantasy and betrayal, packed with the most erotic and deviant sex scenes you can imagine. Fallen princesses and female knights, dark-skinned demonesses and more all meet their fate at the hands of vengeful warlords, demons and otherworldly creatures. Dozens of hours of play, with deviant and frankly sexualized designs by popular hentai illustrator bbsacon.

[from J-List]