19 years old ninja Midou Miko's fortune predicts that she's planning to just fall in love when an urgent downpour throws her into the arms of 20 year-old Hidemasa -whom she immediately recognizes because the man of her dreams!

Poor Miko should never only push away the jealosy of her friend, 19 year-old Fubuki Kai, but has to place her fantasies on hold when she learns in the ancient and mysterious 'male' and 'female' flutes which are wreaking havoc on her parents and some women in the world. Suspecting the new man in her own life might know something regarding the flutes, they must enlist his aid, or perish!