Rin Matoba is a hardworking young adult who takes great pride in her job. Her other pride and joy is her handsome, smart, and brilliant childhood friend, Hirotaka (Hiro) Shigure. Whether its while on the job or at home, Rin knows she can count on Hiro to lend her a hand. However, after a day of heartbreak and many, many drinks, how'd she end up in Hiro's bed!? And, why is he claiming that they're already dating!? Will Rin's forgiving personality win out over Hiro's love―filled delusions?