First off, just wanna say that it felt really cringy when Shingou was debating with Taichi, the girls and Kensuke and he pulled a Tu Quoque on the girls - and later it was, of course, justified as the author wrote him making that claim while knowing that Kensuke had a reason to hate gay men, which also felt really off. Homophobic people don't tend to have much of a reason to hate gay people. WHile I agree we should be empathetic with everyone, I dont think we should justify every feeling (unless we go full deterministic), and the action of hitting someone on the basis that they're gay and it disgusts you is not morally equivalent as the action of telling said person that they're being retarded for hating gay people.
Also, to the question that Kensuke made, "Are you not on your guard when youre with your guy friends?", I'd reply "of fucking course not." I'd confidently drop myself naked and amnesiac on the same room with my guy friends for an entire night if necessary. If you can't trust your guy friends not to treat you innapropiately then they're not your friends, are they? They're more people hoping that they can get laid by hanging around with you.
About the ending, it's...eh. I'll be honest, I came here wanting to seeTaichi and Touma togetherbecause that's what interested me about this story, the idea of a non-yaoi manga containing gay men being accurately represented and one being chosen over a main girl was just too interesting in a manga, but I thought it'd be more gradual. I was pretty mad when I realised that only the last 2 chapters would deal with that. And that we wouldn't be getting a previously-thought-as-het protagonist wondering and aaaaangsting about his sexual identity. I guess in the end talking about a guy being interested in the male body still grosses out the majority of the japanese audience base, huh.