Haruka and Wakana have to don their bikinis
Eiko has an unsatisfying relationship, and finds satisfaction during the arms of the younger Mitsuo. Following a passionate spell between them, Eiko feels she can't keep dwelling this way and breaks up with him. Two many years afterwards, Eiko's young sister, Yuiko is Fortunately engaged to marry, and introduces her fiance to Eiko. The fiance isn't