Hiyori, a guitarist for rock band Baby welcomes capable new bassist Mi-tan. Even though skilled, frivolous Hiyori is always getting ahead of himself causing Mi-tan to explode with a multitude of complaints! It pisses Hiyori off but the dying Baby needs the skilled bassist Mi-tan to survive. But now Mi-tan wants to quit!? A male band that started with respect for one another's skills is now drawn as a romance filled piece!