Mr. Ishibashi of mathematics is an extreme dog Gilai, and he is so strange that he gets a fever just by looking at a dog. That's the beginning of the tragedy because I met a spunk. Spank doesn't know why he's hated and follows the teacher. Thanks to that, the teacher didn't go to class that day and left early. The next day, I was swore and really down. Aiko, who doesn't know the circumstances, is worried that the teacher may have been refused to go to school. The story became more complicated because Spank, who felt responsible, went to visit him.