Hate Kana

There are a lot of haters of Kana cuz they think she's just an annoying extra who always talk a lot and hurt the other characters. But in reality, Kana does sacrifice a lot for others. First, she join B-komachi and help them get better. Second, she gave up her acting career for them. Third, she almost sold her body. Fourth, she sacrifice her friendship, in-order for Ruby to act well.

Yeah she isn't a genius like Akane who know everything about the incident but she helps them in her own way. People just assume that she is useless because she knows nothing, but Kana really doesn't know anything (as stated in this chapter).