Shinya spends every day on dating apps enjoying lewd nights with married women. A mediocre otaku in his student days, he's made a decision through dating apps. His sexual skills improve rapidly after encountering a series of sexually voracious women, and he begins targeting unsatisfied married women. Today, he successfully matches with a high-class married woman and arranges to meet at a hotel... only to discover that she's actually Rimi, the girl he ranked number one in his school days. Rimi realizes that Shinya was once one of the lowest-ranking men in the lower class and begins to verbally abuse him…