What I have a beef with is that it's yet again a manga with a catalog of LGBTQ+ people, all conveniently grouped in a single place, who are, conveniently again, learning about how to be comfortable with themselves, and are, conveniently, receiving life-lessons from various nice people. Nothing wrong per se with that, but it's a bit angelic.
And too forced.
Conflicts are magically resolved, bigoted people who spit in the face of, or beat up gay couples because they dared to kiss basically don't exist. A few dialogs and lo, everyone becomes tolerant, or discover their own identity. Gay people attempting suicide or losing their home doesn't seem to be a thing. "All you need is love and understanding!" (cue for a frog to play a mandolin and sing)
As if... we are talking about Japanese society here. Not really a gay friendly society.
There's nothing stopping you from reading, say, Claudine, or Pieta, or any manga with the tag Aaaangst, or whatever. There are plenty out there - there's a reason there's been a backlash against tropes of dead/evil/"crazy" gay people in media, and it's because it's been so much in the past. The thing that stands out with this manga is both that it's grounded in reality, unlike most manga on this website which both ignores homophobia altogether, and usually puts the story in a high school setting which everyone can pretend is separate from the real world, and that it's positive.
Usually you get unrealistic works where you suspect that they leave plenty of space for the characters to not continue with same-sex relationships when they graduate, or you get a realism where the characters end up unhappy or dead. I'm plenty happy to see good representation and a positive message.