This is for the An Angel or a Demon? challenge. I decided to go with Itaku from the anime Nurarihyon No Mago since I thought most people would pick Rikuo as a main demon for this challenge.
I found the picture on photobucket http://photobucket.com/images/nurarihyon%20no%20mago%20itaku/.
The words are french and translate to "Allow me to eat your soul, human".