Yohei is drawing a picture diary for homework over summer vacation. As he looks around for something fun to draw about, his eyes land on Chi. "That's it! Today, I'm going to write about Chi." Chi loves to eat and be brushed. But as Yohei follows Chi on her walk, he realizes there's another side to Chi that he'd never known before. Yohei finishes a cute observation diary of a little kitten.