Eru Chitanda is a main character of Classic Literature Club series and Hyouka. She is a student at Kamiyama High School and the president of the Classical Literature Club where it is usually her who is responsible for getting the club involved with solving various mysteries. Eru is a very cute young girl (as Satoshi Fukube says that Eru is considered a stunning beauty) of average height (on the taller side in the light novels) with straight mid-back length black hair that she sometimes wears in a rough high ponytail, bangs that are cut straight across her forehead that covers her eyebrows, rather large indigo-purple eyes that tend to sparkle when intrigued, a shapely figure and she is principally seen in the school uniform. When not in her school uniform, Eru wears somewhat loose fitting, "dainty" clothing. Eru is a very ladylike, polite and cheerful girl who is described as being sensible, emotive, friendly, and innocent, coming across as "childlike" in many aspects. Eru has a very positive demeanor and rarely seems to harbor negative emotions. Contrary to her well-behaved mannerisms, she can become compulsively nosy when intrigued; becoming hyperactive and having a tendency to glare and ignore personal space. Although easily distracted, Eru can become very focused on a particular subject, to a point of forgetting anything else not associated with it. She can be very persistent and stubborn, especially concerning mysteries, as she will not be able to stop thinking about it until she finally solves it. Eru is implied to be very intelligent despite being easily distracted and rather quirky; in fact, she's among the top students in her school and has an excellent memory.