Naota is a normal Japanese 6th grade boy (although a little cynical), but when his older brother leaves for America to play baseball, his brother leaves his homeless 17 year old girlfriend Mamimi behind. Mamimi is sending mixed signals and advances to Naota, and he doesn't know what to do about her. But to make matters worse, Naota's world is totally turned upside down when he is run over by a woman on a Vespa. During their first encounter, she hits him over the head with her guitar, which then causes a horn to grow out of his forehead. She calls herself "Haruko" and her presence changes Naota's life to even further insanity.
-taken from Anime News Network

Picture	Real Name	Description
	Naota Nandaba	Although only 12 years old and in the 6th grade, Naota tries to act like he's a grown-up. He has an older brother who went to the US to play baseball. And lately Naota seems to be very concerned about appearances.
	Haruhara Haruko	Haruko, who claims to be 19 years old, looks like a typical attractive teenager except for the fact that she's actually an alien. Tomboyish and eccentric, she rides around on a Vespa and carries an electric guitar that she swings around quite freely. So freely in fact that she hits Naota in the head with it.
	Samejima Mamimi	Seventeen years old, Mamimi is Naota's brother's girlfriend. But one wouldn't be able to tell from the way she acts. Ever since Naota's brother left for the US she's been trying to fill the gap he left with other diversions, one being Naota. A habitual smoker and truant, she loves to play video games and believes in the supernatural.