Yuu left home to attend a boarding school and has now successfully completed his studies. On his way back from the graduation ceremony, he is stunned to see his stepmother Rinka—who supposedly could not attend—running toward him with a wave. Delighted to reunite with the woman he once secretly desired, the now-adult Yuu celebrates alone with her that night. After they drink too much and he escorts her home, Rinka asks whether he will accept her graduation gift and gently kisses him.