From the Japanese light novel series written by Hitoma Iruma, with illustrations by Buriki, animation by Shaft! Plot: The story revolves around a high school boy named Niwa Makoto. He lives with his aunt's family since his parents are away on business. There, he meets his mysterious cousin of the same age Towa Erio who happens to tie a futon mattress around her upper body and is a self-proclaimed alien. . . Included last episode. Comes with "Denpa Onna to Seishun Otoko" novel and a 12-page booklet, digipack.