I'm surprised there hasn't been any hazing or bullying. That counselor seemed to try eliminating the student from the school by having the student body jump him after his confession.
I figured the one who would have left school would have been the dude who confessed to the students, not the agender chick. The dude must have a black belt or something to fight back with.
Where did this manga come from? I thought China was the country that's hip with self-criticism sessions, not Japan.
Of the two bad characters in the story, the rude chick or the counselor, I thought the counselor was the most damaging/dangerous one. I figured such a confession should have waited until high school was over (and it was done in middle school?). That counselor isn't true to form for counselors in Japan... They would have suggested to "Just fit in." And this does help explain why the dude was so accommodating with the rude chick... He didn't want enemies, just understanding friends if they've been clued in often enough.
There's the missing family dynamics that needs some explanation in a sequel if this story is continued.
All in all, after reading all this: My head hurts! (Head explodes) Now I gotta add more tags to black list.