Haruka and Wakana must dress in their bikinis
Eiko has an unsatisfying relationship, and finds pleasure while in the arms from the youthful Mitsuo. Following a passionate spell in between them, Eiko feels she will't continue to keep living in this manner and breaks up with him. Two years later, Eiko's more youthful sister, Yuiko is Fortunately engaged to marry, and introduces her fiance to Eik