Synopsis
At Sakuradamon High, everyone knows the stories about Seiji Sawamura, known as "The Mad Dog," and the terrifying power of his right hand. His fearsome reputation makes it tough for him to get close to girls, and after being turned down twenty times in a row, he jokes that he'll finish high school dating his own right hand. To his shock, when he wakes up the next morning, Seiji finds that his infamous right hand has transformed into a tiny girl named Midori Kasugano. She confesses that she's been in love with him for the past three years. Since this strange situation works for neither of them, Seiji tries to find a way to change Midori back. However, after a big misunderstanding at the Kasugano home, they agree to keep their secret between themselves until they can figure out a solution. This marks the start of an unusual bond—and possibly Midori's only chance to be with the person she adores.