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!

Midori dirtied her clothes with ice cream. Seiji decides to get her new clothes at a doll shop and ends up running into a classmate there.

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

Kouta learns of Seiji and Midori's secret. If he tells Midori's family, she can become regular size again. However, Seiji is refusing…

Seiji's right hand returns to normal. Midori is no longer there. Ayase confesses her feelings, but it is unrequited…