Aaaaahhhhhhhhhhhhhh. The classic, essential typical Lolita bound to be in your favourite animes. Except, there's just one thing that makes her extra spicy - she's of course nothing but the only popular author of her own manga and light novel series herself, which is truthfully, much more successful than the Izumis work. She only writes when she feels "inspired" and is disgusted by Masamune's ability to work even when he doesn't feel like it, resulting in his less popular work, according to Elf herself. She also so happens to move to the empty house beside the Izumis, becoming their loyal neighbour. At first she comes across as a rival, but soon after proves herself to be very helpful and trustworthy.