Yuji Fujiwara lives a bad life When I was XX, I was scolded for a vase that I didn't break, and I was fired from my company because of a co-worker's mistake. - At the convenience store where she works part-time, she is blamed by young girl Takamiya for other people's mistakes. When he returns home feeling depressed, he is greeted by a strange young woman. In front of a confused Yuji, the girl reveals her identity. It was a slime life form that lived with him for three months. Creatures that can speak human language and change their appearance take a liking to Yuuji. Yuji rejects the favor of the slime life form. To attract Yuji's attention, the slime life form changes appearance to Takamiya, a co-worker at his part-time job, and seduces him.