"The haibane who has lived longest at Old Home. Her friends tease Nemu because she is always sleeping. In fact, her cocoon dream was of herself, sleeping, which is a bit of an inside gag at Old Home. She is an old friend of Reki, works at the library, and has been a haibane for nine years. Nemu is often the voice of reason and calm during times of trouble and, like Reki, holds back the secret of a troubled past. She seems to have an almost mother/daughter relationship with Sumika, the former senior librarian."

Nemu doesn't have a lot of lines, but not because she sleeps a lot, rather most of the story is focused on Reki and Rakka.