It's from Devilman Lady, episode 3, about fourteen or so minutes in. The character in the picture is Kasumi, one of the supporting characters of the show.
Greatest anime ever. Flawless characterization for Jun Fudo (main character), best I've ever seen in any anime. Starts out with monster of the week for the first half to develop the characters then launches into a deep story with well thought out themes that's pulled off incredibly well. Given the content (being adapted from a Go Nagai manga espically), there's no traces of humor or fanservice (despite all of the female demons and such). Best thing I've ever watched, check it out.