Kuroneko is very prideful like Kirino but is willing to swallow her pride to achieve a goal.Kuroneko enjoys teen-centered fantasy anime. She often mentions "dark magic", claiming that she has it, usually to Kirino or to Kyosuke. She is noted to have a very large vocabulary, to where Kirino commented she needed to use a dictionary to translate her novel. Kuroneko actually wears red contact lenses to make her bluish eyes seem red. Kuroneko also has younger sisters, Hinata and Tamaki, whom she dearly cares for, though her sisters and mother both seem to worry about Ruri when she in her otaku mode. At school, Kuroneko wears normal clothes and at home, takes care of her younger sisters.