High school student Seiji Sawamura loves to fight. Because of this, girls never go near him. But one day, his right hand suddenly became a girl!

Seiji's sister comes to visit. His sister's street gang arrive also and decide to go to a bathhouse.

Midori and Seiji have switched! Seiji is now on the right hand of Midori!

Shuichi Takamizawa, Seiji's classmate, has been taking pictures of Midori and uploading it onto a website.