Ooh, so Junko's group views Mikako as not caring, but [i]coddling[/i], I can totally imagine antagonism and even a kind of contempt there at the start. And I bet money that there are at least a few people who don't buy Mikako's personality to begin with, think she's putting on a nice girl face just for popularity and validation.

Also, osoto-gari is for nerds. Harai-goshi or bust.