Complex sentence: It is one of a series of idol films starring the "golden combi" of seventies idol films, Miura and Yamaguchi, and featured the first foreign location, and the first sex scene of the couple.
Split into simpler sentences: It is one of a series of idol films starring the "golden combi" of Seventies idol films, Miura and Yamaguchi. It features the first foreign location and the first sex scene of the couple.