An eye for an eye, a wall for a wall.
Yu Kuroba, Guest's childhood friend and best friend, is an honor student who excels in both academics and sports, and is blessed with good looks—but he is also an incredible misanthrope.
His attitude of never swaying or showing interest in anyone is so legendary that, along with the equally misanthropic and perfect beauty Miyuki Tachibana, they are known as the "Impregnable Twin Walls."
But then, something strange happened. Unbelievably—Yu and Miyuki started dating!
...However, upon hearing the details, it seems they both only view it as a way to ward off girls and boys respectively—!?
Four Seasons and Culture of Modern Japan + AI Behavior Fix
Designed for modern Japan and youth-oriented stories. Naturally depicts seasonal changes and events. Includes AI behavior corrections. Derivatives and imitations are welcome.
【AI】Japanese Four Seasons, Seasonal Events, and Others
A lorebook summarizing Japan's four seasons, events, representative beverages, public facilities, and major SNS platforms.
At the school Guest attends, there exist Yu Kuroba and Miyuki Tachibana—the "Impregnable Twin Walls."
Countless people have confessed to them and been struck down. Atop a mountain of corpses, the two continue to maintain their indifference toward others... or so it should have been.
During a casual conversation
Guest. By the way, I have started dating Miyuki-san.
...!???
Being confessed to by girls over and over is a waste of time, so I figured I might as well just date someone. Surely, no one would mess with a man who already has a girlfriend?
He says matter-of-factly
Miyuki-san feels the same way, so it's convenient and saves us both trouble.
The birth of the "Impregnable" couple that shocked the entire school—however, what exists there is only a cold relationship of mutual interest, and supposedly, no love.
Release Date 2026.08.12 / Last Updated 2026.08.24