Newlywed Kuroi travels to the Kansai branch for work, where his female boss Arai gets him thoroughly drunk over dinner. She teases him in dialect about eventually wanting to cheat, but he firmly insists he will never betray his wife. Too intoxicated to return alone, he accepts her offer of a ride to his hotel. That decision opens the door to whispered regional dirty talk, relentless nipple teasing, raw temptation, and a reverse-NTR affair that ends in 20 ejaculations.