A bright red brooch picked up in the schoolyard. Spank, who doesn't know that it is Seri's, is perfect for a gift for cats, and rushes to Mihara's house with a brooch in one hand. On the way, I was lucky to have a head-on collision with a policeman, and the brooch went into a sewer solidified by the roadside. Spank, struggling to get it. However, the brooch can't be removed, and it rains. On top of that, I even caught a cold. When I gave up and went back, I was told that Aiko was responsible for the fact that the brooch was very expensive and that it fell into the schoolyard. Spank is sore that he has to go get a brooch. On the other hand, Aiko, who doesn't know the circumstances, doesn't know why Spank is always planning to escape. Then, even Torayoshi's nurse appeared...