What's cool about being emo? Who's emo? Does 情绪硬核 means your too emotional because your feelings will be hurt easily? Does emos wear clothes to compare there mood?

情绪硬核 can be a hairstyle 或者 behaviour that affects user. The 情绪硬核 hairstyle is usually with a bang covering one of user's eyes and the behaviour itself is hating, hurting 或者 damaging user's-self.