When amu was still small, she has a bully childhood friend, Hiro-kun who she hated really much. it's 10 years after hiro-kun moved to america. amu has sealed away her memory about hiro-kun, and leading a happy normal life.

One day, hiro-kun came back to home!! and he will bully me again...!!, amu thought in horror, but, hiro-kun has become a bit weird. far from being a bully, he is so tender, and he announced himself to be her boyfriend--. actually, what happened to hiro-kun!? and how about amu's destiny...??