Female teacher Yukari was distressed by the daily problems caused by Yabuki, the troublemaker in her class, who hurt those around him. She received complaints from students but couldn't discipline him because he was the chairman's son and felt helpless. Later, during a private consultation, there was no sign of remorse in Yabuki. Instead, he said, 'I'm interested in assholes,' and pushed Yukari down, roughly playing with her anus... He even inserted it, causing Yukari to writhe in pain. However, an even greater tragedy befell her...
