I'll start by looking up the title. Maybe the user is referring to a specific light novel. From what I remember, there was a light novel by this name by author Kōzō Shiozaki with illustrations by Yūki Kō. It was part of the Kodansha box set. The story centers around a man who accidentally sees his wife in an intimate situation with another man, leading to a series of events where others also misunderstand their relationship. The main character has to navigate through these misunderstandings and the societal reactions.
