優しい姉妹：夫交換の日

Saya, who had trouble getting her boyfriend full of stamina, tells her cousin Marie that it is too hard. At that time, Marie gives her young couple an extraordinary suggestion of swapping their married couple, telling them about their sex. The special sex education of the married couple with the technique of the anniversary begins now.

《優しい姉妹：夫交換の日》是一部韩国理论，本片由导演执导、著名演员参演，集合超强制作团队带来的一部高质量影片，2678电影提供的《優しい姉妹：夫交換の日》相信在众多实力演员和超强的制作团队下，定能将本片打造成新一代电影的高峰。