This is a rare gem. It's a 36 chapter drama where each chapter seamlessly bleeds into the next with no stātus quō ante. Furthermore,  quintessential of this auctor's style, every character feels as though he be the protagonist of his own story, even the most minor characters feel as though they have some backstory to them and often have scenes or thoughts that don't actually relate to the protagonist but simply to their own lives to let the audience understand who they are and what their psyche is.
It's obviously a dark story and it's supposed to be, the setup starts in the typical sense that the protagonist has two love interests: a good guy, and a bad guy, and against his better judgement falls for the bad guy and in that, commits infidelity against the good guy, but then the plot becomes increasingly more complex with more characters being introduced and while the protagonist's actions were more excusable at the start because his relationship was more or less one-sidedly proclaimed by his “lover”, he becomes increasingly more sex-addicted and inexcusable in his behavior.
It's a title that does not attempt to hide it's sex scenes, but unlike what many people say, when counting, only less than half of the chapters actually include sex scenes; the first and final chapter don't. This title actually has less needless fan-service than most in that the auctor does not find excuses to include nudity and sex scenes, but rather does not hide them either from the viewer when they service the plot; it is after all a title about infidelity at it's core.
It's also one of those titles where characters have extensive internal monologs about their situation and life, which I always very much enjoy, often set across dark city panels at night, which sometimes can become quite poetic.
It's a very dark and compelling psychological exploration of sexual addiction and many other vices,, and it certainly helps that the sex scenes are very good as well.
My main criticism is the art and character design which I found inferior to Aki-Sora by the same auctor, though this has a much denser plot, I particularly did not enjoy the character design of the protagonist whom I found too plain, as well as that of some of the other characters and Aki-Sora seems to have had superior art.