Board Thread:General Discussion/@comment-27043993-20160210162514/@comment-301598-20160213034230

There's a difference between Kuudere and Emotionless Girl (which is what Rei is -- not a kuudere.) A kuudere simply doesn't wear her heart on her sleeve. Because she isn't easily emotionally swayed, she won't be won over with either earnest charm or a silver tongue, and can only be impressed through deeds. In most works featuring kuudere, the stakes are a whole lot higher than a high school romance comedy, and she has weightier concerns that matters of the heart.

A kuudere is as likely to be a damaged person as tsundere or yandere, she just copes with it better, mostly out of necessity.