START-498-2 The woman who had sex at the swingers' bar was her best friend's husband. One woman wants to dominate and the other wants to be dominated... Two married women with completely opposite personalities fall into a life of pleasure and become partners in a four-way wife-swapping encounter. Aozora Hikari, Kamiki Rei - Hikari Aozora

Best friends Hikari and Rei were both troubled by their "sexual compatibility" with their husbands. After discussing it, the two couples decided to visit a swingers' bar. Caught up in the exciting atmosphere of the bar, where a "masked party" event was being held, Hikari and Rei's desires to dominate and be dominated exploded beneath their masks. But their partners were their respective husbands...