I think some people are misunderstanding Kaji's character here. Kaji is infatuated with Kobayakawa, and the latter is is also harbouring deep feelings for the sensei, which the seme is WELL AWARE OF. And told him, multiple times to confess to him, so that they can make it official. However Kobayakawa, maybe due to his countryside upbringing or his soft timid nature, he could not confess openly, despite having the fact being right under his nose. I don't blame either of the two characters, they are just not very open to each other initially. But keep on reading the sequels, the seme and uke are really loving and passionate towards each other. It's really well etched out.
Dojin is muscly for an uke and I really love that, makes the characters more believable. Nonetheless the uke definitely has the "yaoi's stereotypical" soft look as far as face is concerned. The thing that really surprised me was the Yellow Dragon. For a seme, he's just downright beautiful. He has even a red cut crease on his eyes! That's like permanent!
The fact that this VERY thing happened for real to my friend is what scares me. It's yaoi, fluffy and whatnot in the manga, but pretty scary in real world.
A very pretty woman once approached my bisexual friend who openly appreciated crossdressing men or trans women. However this girl she flirted with him, kissed him and they both decided to have sex in a love motel. My guy friend is small and kind of frail, so apparently when they were making out, he realised that it was actually a guy. As soon as they were in the motel, he was kind of forced to make out and do a couple of stuff which rattled him. He was a virgin and although he liked guys he was never forced to do anything. But that was a very scarring experience for him. So this yaoi manga was kind of an "holy shit" moment for me. Fortunately he did not have any such pics of him like the character above. Also funnily enough, the guy actually come up to my friend and apologised later.
Kaji and Kobayakawa's character designs remind me of Kawaii Akuma's main characters. Beautiful seme character with an equally pretty uke character, but appearing dull to others because of the way he dresses up. Yep.