Gyaruzuma Sex: Hoka no Otoko ni Inwai Houshi Suru Ai Suru Tsuma

The protagonist, Naohiro, and his wife Risa have been married for 4 years. Their married life is smooth sailing, and the good relationship between them is enough to be envied. Except for one feeling born from Naohiro's heart... It all started with a small incident. One night, when the couple was happily drinking together, Risa talked about her ex-boyfriend, and after the conversation, Naohiro fe...