Kokuin
Kyouya, an antisocial neurophysics researcher with a tragic past, is kidnapped and subjected to sexual stimulus experiments by a mad scientist who happens to be a professor at their university hospital. Kisaragi, who has seen Kyouya's better side, rescues him and secrets him in his brother's hospital, while the mad scientist is still hunting for him. An interesting premise and promising start. Sadly, it looks like the translators have dumped the project.
Yajirushi
One-shots about dark fetishes: humiliation, terror, rape, gang rape, public sex, train chikan and voyeurism. No dancing around the issue of consent here; it's all heavy, emotionally detached blunt!smut which left me dry, bored and feeling sorry for the afflicted character.
Haru ni Kaeru
Series of oneshots mostly dealing with desire and discontentment in a supernatural, after-death context, usually along the lines of "Surprise! The wish genie is a dick."
Ever After
Twisted and, sometimes, dark stories inspired by Cinderella, Little Red Riding Hood, The Little Mermaid and Sir Gawaine and his Fairy Bride or, possibly, Beauty and the Beast (can't tell which from the story.) Only the Cinderella story's plot structure comes all that close to the original, but the plots are interesting and some of them contain unusual twists. The art is unique and stylish. I find that the characters are lacking in charisma; they are all so cold and emotionally detached. It was difficult to warm up to them.
Hadakeru Kaibutsu
Spin-Off sequel to Sabita Yoru Demo Koi wa Sasayaku and the fourth chapter of Renai-Rubi no Tadashii Furikata, this manga follows the story of Hayashida Ken, Yumi's abusive ex-boyfriend, and Shuuna Ayuma, his new lover and colleague at work. Flashes and hints of Hayashida's past come out during sex, but Shuuna mistakenly assumes it has to do with his inexperience as a gay lover and, before he can uncover the truth, he learns that he is being transferred to a different city.
Kusatta Rasen