Well, starting from the beggining, I do think Shinobu was too easy on the guys...I mean, how could he think he liked Riku if he hadn't seen him for so long?!
And I hated that he didn't try to resist both of the guys at all.
It was also pretty obvious that he loved Kouki from the very beginning, so why didn't he just skip all the struggling?'
Then, the second chapter was kind of meaningless. I mean, I know that after the couples are together, the author needs to make us love them by showing some lovey-dovey situations...but for me, it would be much better if they had problems for real.
Overall, this chapter was cliché.
I loved the third one, though.
I have to admit that, even though I've read thousands and thousands of more graphic and hotter mangas, this was one of the best sex scenes of all times. I don't know exactly how to explain, but it was all so good put together that it became remarkable for me.
As for the ending, I got to like Shirakura-sensei because of it. I mean, he IS a perverted old man, but he made Shinobu prove that he loves Kouki (and for me, it was more to himself than to sensei, actually)
Well, I simply adore Kouki! I think he is a little less pushy than he should be, but he's the kind of characters to get me addicted.
(Hey, have you guys noticed Shinobu has really long nails? :3)