姉妹X調教～絶対服従、セレブ姉妹と毎日中出し性活～

The protagonist Shitara Naoki, is fired from his job managing the parking lot of a university, and becomes desperate albeit partially. The reason is because of his attitude at work, however, it does not matter to him who has lived with a self-centered personality for over 40 years, regardless, he blames his surroundings and drowns himself in alcohol to escape from anxiety.

One day, he gets into a fight with another customer at a bar and is forced to leave. While grumbling and going home, because of his drunkenness, his legs get tangled up which make him leap onto the road, and gets hit by an oncoming car. A woman comes out of the car and takes out her phone, while seeing her calling someone, Naoki faints.