Narumi is a childish character and claims to be quite stupid. However has an excellent critiquing ability, to the point that she tends to criticize things other than food. Narumi has intense mood swings and can jump from one emotion to its polar opposite in a moment's notice. She likes to have fun, is generally outgoing, and dislikes when people interrupt her fun. She gets along with others fairly well, especially if they compliment her food.