Shōnen Ace
A manga adaptation, titled "Hyouka" and illustrated by Taskohna, started serialization in the March 2012 issue of Kadokawa Shoten's "Shōnen Ace". Kadokawa Shoten published 13 "tankōbon" volumes from April 26, 2012 to November 25, 2020. The manga's first twelve volumes adapted the first four novels, same as the anime series. A sequel series started in the August 2019 issue of "Shōnen Ace".