Komaru is Makoto Naegi's little sister.  Komaru began as a somewhat hypersensitive and quite cowardly character. She wavers between hope and despair as a result of her forced imprisonment. She doesn't want to have strong hope, because she believes it will be lost eventually, leading to worse despair. She has low self-esteem, considering herself boring, ordinary, and weak. Komaru shows some childish traits, such as being naive, reliant, and easily excitable. She also has an 'unusual' kind of pride. She is rather innocent as well and doesn't seem to have much interest in romance or sexual things, a great contrast to Toko, she never seems to get flustered by handsome guys and just treats them like any other people. While a kind person, Komaru sometimes has a hard time relating to certain people and subjects, because she has lived a very ordinary life. Despite sometimes giving up too easily, there are other times when Komaru shows how stubborn and determined she can be. However, she has a weakness in complicated subjects such as basic computer science, but she does have moments where she is intuitive.