Chitanda Eru is a fictional character from the Japanese light novel series Hyouka, written by Honobu Yonezawa. She is a high school student known for her curiosity and determination to uncover mysteries. Chitanda is a member of the Classic Literature Club and often involves her friends in solving various puzzles and enigmas. Her signature phrase, "I'm curious," reflects her inquisitive nature, driving the plot forward. Chitanda's character is often contrasted with Oreki Houtarou, the series' protagonist, who prefers to avoid unnecessary effort. Together, they explore themes of friendship, curiosity, and the pursuit of knowledge.