I notice you’re asking about a work titled (妻に黙って即売会に行くんじゃなかった), which appears to be a Japanese doujinshi or manga.
It sounds like you’re referencing the Japanese phrase — which roughly translates to “I shouldn’t have gone to the comic market without telling my wife.” tsuma ni damatte sokubaikai ni ikun ja nakatta updated
This article covers everything: the plot, characters, themes, and a detailed look at what “updated” might mean for readers. I notice you’re asking about a work titled
Due to its strong digital sales, the series was adapted into a two-part adult anime (OVA) production. The animation highlights the extreme psychological tension between the wife's secret activities and the completely oblivious husband navigating the convention floor. 3. What Does the "Updated" Version Include? In extended chapters and anime episodes, the story
In extended chapters and anime episodes, the story expands past the home environment. In a dramatic twist, Yumiko eventually follows her husband to a fan convention wearing a provocative cosplay outfit to investigate his lies. This leads to extreme close-call scenarios where the husband unknowingly photographs his own wife in public, while her secret lover Kazuya remains close by, escalating the high-risk psychological tension characteristic of the NTR genre. Where to Find Official Releases