Doukyo Suru Neneki 1

Yuji Fujiwara lived a quiet life. When I was a child, I was often blamed for a vase I didn't break, and I was fired from my job because of a co-worker's mistake. At the convenience store where he works part-time, he is blamed by Takamiya, a younger girl, for mistakes made by others. When he returns home feeling depressed, a strange girl greets him. The girl reveals her true identity to a confused Yuji. It was a slimy lifeform that had been living with him for three months. A creature that can speak human language and change its appearance has a crush on Yuji. Yuji is curt about the slime life form's kindness. In order to attract Yuuji's attention, the slime creature transforms into Takamiya, a colleague at his part-time job, and seduces him.