I saw the same dream again. Sumino E.

A student of primary school Nanoka Koyanaga considers herself very smart and slightly despises the peers, so classmates are shunning her. But this does not bother the girl, because she has faithful friends outside the school: a short -tailed cat, a pretty girl with a strange name, a kind grandmother, always ready to treat it with wonderful cookies, and a gloomy high school student, who hides her notebook from all. And then one day Nanoka receives a task at school: she needs to understand what happiness is. Where will the heroine will lead the thoughts on this eternal issue and how will her life change as a result?..