Kappa no Kaikata

Both are cute slice of life series about raising pets, and both have short episodes. 

Short, comically cute with no overarching plot line. 

Both contain elements of Japanese folklore. No overarching plot line. 

Both are "what if" shows in which imaginary beings are part of every day life - kappas as pets in Kappa no Kaikata and storybook and imaginary characters as playmates in Noramimi. 

Both are "what if" shows in which imaginary beings are part of every day life - kappas as pets in Kappa no Kaikata and storybook and imaginary characters as playmates in Noramimi. 

Both anime are about keeping and raising unusual pets. Both anime shows elements of Japanese folklore and youkai in modern world. Both of them are cute, funny, not long and simple plot series.