Hyouka

Houtarou Oreki follows one simple rule: if something does not need doing, he will not do it, and if it must be done, he will finish it with as little energy as possible. His plan for a quiet high school life breaks when his sister forces him to join the Classics Club to keep it from closing. There he meets Eru Chitanda, a relentlessly curious girl who cannot leave any question unanswered, soon joined by Satoshi and Mayaka. Oreki's sharp powers of observation make him the person the group turns to for the small mysteries hidden inside ordinary life: a locked room, an old story, a strange phrase, or a forgotten incident. With every new question from Chitanda, the boy who wanted a gray life finds himself drawn into one far more colorful than planned.