My wife wants to be an NTR

The protagonist, Hie Yuki, is a part-time worker. - A few years ago, he left Nuitter Japan due to his boss's power harassment . - His boss and his wife have moved in next door. - Taking advantage of the husband's absence on a business trip, Yuki sleeps with the married woman, Iruma Keiko, and gets revenge on his former boss. - ..​