As a human, Kokushibo's look was almost identical to his demon form, except for the number of eyes, his eminent eyebrows, and his less light skin. His eyes had dim purple irises and normal, white sclera as a human. As a child, he was normally seen wearing a white kimono, as oppose...
Both the anime and manga have never shown if Nezuko eats anything else. But as a demon,she has never eaten a human being. Instead, she seems to be able to recover energy and sustain herself simply by sleeping. This is why she is always asleep throughout the series. ...