Tanshin Furin -Netoraretara Netorikaesu Baigaeshi-

単身不倫 -寝取られたら寝取り返すバイ返し‐
“Seiji Masono”, an engineer who works for an IT company, will leave his family behind to set up the infrastructure of a company in Jugahara City.

At the company where he is assigned, he meets Ayaka Amagasaki, who belongs to the support section, and works on infrastructure and miscellaneous affairs together.

One day, Seiji receives a certain consultation from Ayaka.

It said, “My girlfriend’s husband, who is working alone, may be having an affair.”
Looking at her husband, Kyosuke’s SNS, there are several photos that resemble Seiji’s wife, Yui’s belongings.

After returning to his room, Seiji made it possible for him to remotely view his home security camera.
Yui and Kyousuke are there…

Seiji, who found definitive evidence that he was cheating, decided to sleep with Ayaka Amagasaki out of revenge for her cuckolding.