Yui, who took over as the real estate agent handling the hot spring district after her predecessor quit, inherited a land acquisition case in the area. However, negotiations with one stubborn inn owner were stalled because he kept refusing. He was a typical stubborn old man who turned her away even when she went to greet him. So Yui came up with a plan to stay at the inn and get close to the stubborn old man before discussing business. However, the old man, seeing Yui's body after she checked in, began to hatch a sinister plan...