I wanted to like this, but by the end you'll at least feel how insulting it is. If you recognize it the myth, it's disgusting.
It's easy to miss, but the story is truly about and supporting a prejudiced belief used to marginalize same-sex attraction (within Japan in particular): It directly brought up, showed a bi girl accepting, never slightly disputed, and had an extra affirming the idea that most children who feel same-sex attaction will grow out of it. This is an insidious simplification at best. Especially in a more conformist country like Japan, there is heavy social pressure to repress queerness. What does that then say about the quality of people who don't grow out of it? That they're immature? Deviating from a path? Worldwide the belief is used to justify conversion therapy and contributes to the marginalization of queer adults.
The horror of this series is that, for its target audience, it's anti-yuri about a transient queer phase, with no confirmed queer adults. The flash-forward extra on the flipside of the cover is an enthusiastic discussion about marriage (implicitly heterosexual currently), with one girl confirmed to have a boyfriend. Including that pointed extra, the problem isn't subtle. Could the any of them see herself as lesbian or bi? Maybe. But it was apparently important to emphasize happy heteronormality.
From first scene to last middle school scene, the characters believe and suddenly accept "if you want to stay friends, stay closeted, don't put it into words and trouble your crush, ever, and things will go very wrong if you even get close to openly confessing". It worked, they're friends years later. The assertive cinnamon roll who was the only one without the full picture also came to this conclusion but it would be harder to believe if she wasn't fooled. Her crush supposedly noticed, then never thought about it again. There was no endgame. The whole tension, the whole plot, was that repression hurts, let's feel bad about repression a dozen times each, and the resolution is that you'll get used to repressing and solve everything! It's alright, 3/3 former crushes confirmed!
I can't imagine the author's emotions at the time, but the result was something akin to bigoted propaganda. That gets a zero score from me.
Even in downer endings, there's often an acceptance of one's queerness along the way. Not here, not in the whole saga. I'm angry about this, it didn't sneak up on me so much as I held onto the delusion that somehow the story would stop being repetitive and dismissive. I need brain bleach after this one. That extra spoiling the rest of the volume was fair warning for the sludge. I hated it enough to word vomit this, I guess.
The twin brother had the most character development. He went from a twisted place to a sweet one, though the whole thing was unrelated to the main plot and the secondary conflict evaporated. Eh, read a proper crossdressing or gender nonconforming or trans manga. Love Me For Who I Am has dark parts and a good lesbian subplot.
We're an era past this manga's release, and Japan has high albeit apathetic queer acceptance, and increasingly visible representation and politics, so I'd like to believe this manga is an antique.