Midori Days

Seventeen-year-old Seiji is feared for his fighting prowess. Secretly, however, Seiji wants to stop being lonely, but girls don't like his tough-guy reputation. Then, one day, Seiji wakes up to find that his "devil's right hand" has turned into a miniature girl, Midori, a real girl who has a crush on Seiji and has somehow gotten her wish to be connected to him.