Nanadaba Naota is a 12-year old grade 6 kid, living in Mabase, Japan. He attends, what i'm assuming to be Mabase's Elementary or Middle School, with Ninamori Eri, the class president, Gaku, and Masashi. They are instructed by Junko Miyaji, a hyperactive teacher who wears clips of all shapes in her hair, and has a problem with cars o_o;

His father is Nandaba Kamon, in all his horny, carefree, lazy and laidback ways. They live with his granfather, Nandaba Sigekumi, who must think everyone surrounding him is crazy, and the token fat cat, Miyu Miyu. Over time, Haruha Haruko, who could easily be the cause of all this mess, and Canti, the odd robot, move in.

He is used, in essence, as a sexual vent for Samejima Mamimi, the pyromanic, bored, and most likely clinically insane girlfreind of his brother, Nandaba Tasaku.

Nandaba Tasaku is the star of Mabase, Japan, and is extremely gifted in baseball. He went off to America, to persue a career in it, leaving behind a brother, a town, and a girlfriend.