Driver Izumi Murata always cuts her lines close. Nagisa Suzuki desperately tries to keep up with her fierce driving. Their master-and-servant relationship continues even while they`re driving. Izumi and Nagisa have been in the same class since kindergarten, and Nagisa has always been Izumi`s follower. Izumi notices when Nagisa`s mental state begins to change. When Izumi herself realizes what`s happening, she is at a loss.