I wish there was a more "concrete" explanation of what exactly is despair and how they affect each character individually. It is such an abstract concept. Tsumiki causes despair because of her love, Komaeda causes despair so hope can grow even stronger by defeating such strong despair... But what exactly is the feeling of despair? How can a feeling be capable of drive you into a state that you want to engage into a self-destructive anarchy?