Okay, overall, I don’t think this manga is worth the time. It has some positive points indeed, but you will skip right through it quickly and even stop paying attention to the scenes. That’s because it’s full of clichés, which would be fine if it had a plot. It doesn’t, really, it’s almost PWP.
The characters are completely 2-dimensional and aren’t developed since the beginning throughout the end.
Soushi is SICK with his sex games and all at first, which makes him enjoyably up to a point. He's twisted and sadist and, on top of that, he's actually easily embarrassed, which is cute. But then he gets totally passive and boring.
Narushima’s worse. I didn’t even like him much. He goes from someone full of hatred and probably a virgin to somebody addicted to sex, that easily. The only good point about him is how he's so humiliated at parts, which is sexy.
The real problem with this manga is that the pace is way too fast. Six months go by and then another two right after that, so eight months have gone by without us getting more of the characters, and that’s only the first few pages. As for the "you rape me so I love you" thing, though most people don’t like it, I'm actually a little into it. Of course, I prefer when it's justified for, but even when it's not I find it enjoyable. But because of the messed up pace, it doesn’t have enough solid bases to be love.
Their relationship's pace is weird too, going from one step to another without any development. Because of that, their love isn't the slightest bit believable. Even their pasts don’t count for nothing. It could’ve been a story where they just met, and it’d be the same.
Maybe to compensate for the wrongs, Chitose-sensei put on some conflicts. For instance, infidelity. I’m okay with it in yaoi as long as it has consequences, deep angsty ones, and then lead to a positive outcome to the couple's relationship.
The good point about this is the deliciously violent and rough sex. It’s hot as hell. Then again, even that becomes a little too much, since the amount of sex scenes is too big and some of them were a little disgusting.
As for the extra chapter, the original idea was actually pretty creative, in spite of the rest of the volume lacking originality. But then its development is just the same: sex, sex, sex and no real plot.
The art is a little weird, but it's quite cute once you get used to it. Though sometimes they both have uke's expressions – and I’m not very fond of that. I have to say, though, that art-wise this isn't one of Chitose-sensei's best ones.