Yui, a housewife unsatisfied by her early ejaculating masochistic husband, and Nono, a housewife tired of her insatiable late-ejaculating husband's persistent sex. In a certain apartment building, these two couples lived next to each other, both burdened with sexual problems. One day... they received complimentary vouchers for a high-class hotel from a newspaper salesman, and Yui and Nono came up with a plan. It involved using connecting rooms to swap spouses. And so, on the appointed day, the doors of NTR opened between the two couples…
