Urara really would like to be a normal high school student, but her older sister and mother, a crazy scientist, make this difficult goal. For their last experiment, they united the neighbor and friend of childhood Urara Takahar in the body of the Urara. Finding it, the Urara destroyed some experimental devices in a fury attack, leaving them glued to each other at the moment. Takahar-graduate secondary school, which sells erotic manga, expecting re-passing entrance exams in college. Takahar captures the body of the Urara when it falls asleep or faints, and, to the shame of the Urara, uses it as the source material for its sleeve. Will they manage to cope with the division of the body while the family of the Urara can not fix everything?