The Showa period was ending and the era was about to change to the Heisei period. Newlyweds Chikage and Ryuhei argued over trivial matters, but at night they made up for it with sex.

It is the last night of the Heisei era. Rokuo, who lives in the employee dormitory of a local brothel, is visited by Yoshio, his senior, and they engage in a silly conversation. Sequel to Heisei fuzoku-shi: Ano toki mo kimi wa ero katta/Heisei Customs History: You Were Erotic at That Time Too.