Why didn't she ask EBA?

Oreki Houtarou is a self-proclaimed "energy-saver" - that is, he will not actively waste energy doing things that aren't necessary. Though he had no interest whatsoever in joining any clubs upon entering Kamiyama High School, he was commanded by his older sister Tomoe to enter the school's Classics Club, which was in danger of getting abolished as all previous members have graduated. Together with his old friends Fukube Satoshi and Ibara Mayaka, as well as the elegantly ladylike and curiously inquisitive Chitanda Eru, the newly reformed Classics Club find themselves involved in all sorts of mystery-solving escapades. Houtarou soon finds out that the Classics Club, as Tomoe has promised, is actually "quite interesting". *Note: Book one of the Koten-bu Series.*

*Note: Book three of the Koten-bu Series.*

Oreki Houtarou is an "energy-saver" kind of guy, who expends as little energy as possible to do only things he has to. When he starts high school, his older sister sends him a letter asking him to join the Classics Club. The club meant a lot to her, and its number of members has been reduced to zero. Houtarou reluctantly signs up for the club, only to find that someone else has joined, too! She's Chitanda Eru, a cute, big-eyed girl with an overwhelming sense of curiosity. A mystery crops up that catches Eru's interest, and also draws in Houtarou's friend, Fukube Satoshi. They continue solving mundane mysteries together, and soon they draw in Satoshi and Houtarou's friend, Ibara Mayaka, as well. Mayaka has had a blatant crush on Satoshi since middle school, but he always fends off her advances. Together, they search for the truth in a mystery that involves the history of the Classics Club.