The distance between Subaru and Haru is slowly shrinking. Since the vet said Haru was slightly overweight, Nana visits Subaru's home to share her advice on cat diets. Subaru enthusiastically listens to all kinds of tips he'd never heard before on correct feeding amounts, a trick to feed using a drink bottle, and more. Haru seems to enjoy this new game, as well. Eventually, Nana takes her leave, but she forgets her house key, so Subaru hurries to return it to her...