Matsushita Koji

In the fall of 2005, following his father's sudden death, Keisuke and his older brother were left to run their family's small factory, Elena Electric Industry. A once-in-a-century economic crisis threatens the factory's near-bankruptcy, but Keisuke, armed with his innate sexual drive and positive personality, sets out to revive it. His older brother, Ichiro, is constantly stressed, both mentally and physically, by the family debt and unfamiliar mechanical repairs. Meanwhile, his younger brother, Keisuke, is in a tavern, desperate for sex with a woman he met on a dating site, and her friend, Taeko.

Mizuki disguises herself as a boy and transfers to the same all-boys' high school her idol, Izumi Sano, a high-jump athlete who gave up on the sport, attends. In between their classmates' antics she tries to get him to jump again.