Not a too big fan of Kaguya, but that had style. And it looks like Prez managed to picked the most sane girl in the council. The girl with the split personality.
Fujiwara's prank didn't get me. First thing it looked too unnatural (big head, reflections), so I instinctively thought for an explanation (bald cap?) and looked for a fault. I mistook her thin eyebrows as the caps border. Also there is not enough hair on the floor and she likes pranks..
Miko's reaction isn't too much off IMHO. (She doesn't totally look like a psycho. Not totally.) She is emotionally invested and even though it (officially) doesn't concern her, she showed, that it bothers her. A lot. If anything she just gave a big hint to everyone, that she might be after Ishigami (aka best boy), even if she might not have realized that herself. (But I do concur: Attention and praise seeking + big tolerance for abuse spells "no good"). Tsubame, even though a "slut" (has it been confirmed, that she up til now only had short time relationships and one night stands?), has been made a fool out off (Prez's dad) and does reflect about the possibility for a long term relationship with Ishigami (with hints of being smitten by him). I do cheer more for her, than for Miko at this point.