Damn, some people really hate the MC (Hiiro/Itsuki) because of his obsession with yuri. I think that's part of his charm. But he still has empathy, you know. This might be a spoiler, but he is someone that if there's a girl who genuinely loves him and would cry if he rejected her, he'd say, "Okay then, I changed my mind, let's get married."
I've read the novel, and I really enjoyed it more than I expected. Hiiro's interactions with the other characters are enjoyable, at least for me, but what I like the most is his interaction with that one demon. (If you know, you know.)
This manga makes the story even more amazing with its action sequences and visuals. I've always been a fan of this kind of art style. Solid 8/10. I just hope that this manga has better pacing than the novel because in the novel, some parts have weird pacing, so I really wish that this manga can do better.