Thomas Pletzinger said this quote

“ Leo and the Notmuch, the five-year old Leo Loses his best friend (is death for children like moving away?). For a whole summer he sits in his room and makes up stories. When his mother knocks and asks what he’s doing in his room, he answers: not much. Does his miss his friend? Not much, always: not much. Leo’s stories are the Notmuch (what kind of an idea is a Notmuch? It’s not nothing, at least). Leo and fips turned the world into a fun and exciting place. They stayed together through thick and thin. Leo is despondent without Fips, he hides away in his room. His mother gets worried and asks how he’s doing and what he’s up to in there. Not much, answers Leo, not much. He lies on the bed and grieves for Fips (a childlike depression). Then Leo begins to create a friend in his mind, a cheeky, brave, and honest friend like Fips. Leo dubs this “good monster” the notmuch (a childlike mania). Now the two of them play, they’re cheeky and brave together, Leo now answers his mother: Notmuch. The notmuch is half memory of Fips, the other half is imagination, the two halves together enable Leo to overcome grief. ”