Haruka and Wakana must wear their bikinis
Eiko has an unsatisfying relationship, and finds satisfaction from the arms of the more youthful Mitsuo. After a passionate spell involving them, Eiko feels she will be able to't keep living in this manner and breaks up with him. Two decades afterwards, Eiko's younger sister, Yuiko is Fortunately engaged to marry, and introduces her fiance to Eiko.