Enma Ai is the main female protagonist character from the Jigoku Shoujo anime series also known as the girl from hell, Jigoku Shoujo anime is very thick with the theme of the nature of human emotions, Revenge, injustice, and hatred, if you ever find yourself stuck with the one you hate arround you, you can ask Enma Ai to send them straight to hell (only if they are bad people ^^'). it's a little scary.
Enma Ai normally always wear black uniforms as seen in the second Enma Ai Cosplay picture, but when delivering the vengeance of a client she always wearing a black kimono with floral designs, Mon has made a very beautiful Enma Ai Cosplay.