A character from Muk (MonsieuR)'s Tiny Evil series. She first appears in Tiny Devil 5.
Yuu is a succubus who has Brown Eyes, a Mole Under Eye, and long Black Hair stylized with Blunt Bangs, Sidelocks & Half Up Braid, and a Demon Tail. She is usually depicted wearing a white Hair Flower, a White Sweater, and black Boots.