Hyōka (氷菓, "frozen dessert" or "ice cream") is a Japanese mystery novel by Honobu Yonezawa. It is the first volume of the Classic Literature Club (古典部 Koten-bu?) series. Four additional volumes have been published between 2002 and 2010. A manga adaptation drawn by Taskohna began serialization in the March 2012 issue of Kadokawa Shoten's Shōnen Ace. A 22-episode anime adaptation produced by Kyoto Animation and directed by Yasuhiro Takemoto aired from April 22 to September 16, 2012.
At the request of his older sister, student Hōtarō Oreki joins Kamiyama High School's Classic Literature Club to stop it from being abolished, joined by fellow members Eru Chitanda, Satoshi Fukube and Mayaka Ibara. The story is set in Kamiyama City, a fictional city in Gifu Prefecture that the author based on his real hometown of Takayama, also in Gifu. The fictional Kamiyama High School is based upon the real life Hida High School.
A 22-episode anime adaptation of the first four novels, directed by Yasuhiro Takemoto and produced by Kyoto Animation, aired in Japan between April 22 and September 16, 2012. A bonus original video animation episode was streamed online on UStream on July 8, 2012 and was later released on Blu-ray Disc with the third manga volume on January 12, 2013. The first episode premiered on April 14 at a special event at Kadowaka Cinema, Shinjuku. The series has four pieces of theme music: two opening themes and two ending themes. The first opening theme, used for the first 11 episodes, is "Yasashisa no Riyū" (優しさの理由 Reason of Kindness) by ChouCho, and the second opening theme from episode 12 onwards is "Mikansei Stride" (未完成ストライド Unfinished Stride) by Saori Kodama. The first ending theme, used for the first 11 episodes, is "Madoromi no Yakusoku" (まどろみの約束 Promise of Slumber), and the second ending theme from episodes 12 onwards is "Kimi ni Matsuwaru Mystery" (君にまつわるミステリー Mystery Surrounding You); both ending themes are sung by Satomi Sato and Ai Kayano.
Hōtarō Oreki (折木 奉太郎 Oreki Hōtarō)
Voiced by: Yūichi Nakamura
The main protagonist of Hyōka, he is a rational boy who lives by "If I don't have to do something, I won't, but if I have to, I'll do it quickly." He only joins the Classic Literature Club at the request of his older sister, Tomoe Oreki, to stop it from being dissolved. He says that he doesn't like to waste energy, but if given a mystery to consider, he will see it through until it is solved with his brilliantly logical deductions. To him, Eru is "someone he can't ignore," hinting that he may have feelings for her. At her urging, he soon finds himself more involved with high school life.
Eru Chitanda (千反田 える Chitanda Eru)
Voiced by: Satomi Satō
An inquisitive girl who joins the Classic Literature Club. Eru's catchphrase is "I'm curious!" Although she earns top grades in academics, she is often ditzy and relies on Oreki's reasoning abilities often. She is an energetic girl that is well-versed in the town traditions and etiquette, having come from a lineage of wealthy farmers. Whenever a mystery is brought to her, she won't be able to stop thinking about it until it is solved. She holds great admiration for Oreki, often praising him for his talent in solving mysteries. It is hinted that she harbors feelings for Oreki.
Satoshi Fukube (福部 里志 Fukube Satoshi)
Voiced by: Daisuke Sakaguchi
Hōtarō's classmate who joins the Classic Literature Club with him. He is proud of his impressive memory, referring to himself as a human "database", and wears a perpetual grin. Although he always urges Oreki to participate more in life, it is revealed that he is also secretly jealous of Oreki for his critical reasoning abilities. He calls Mayaka Ibara by her first name, which indicates the two are close. Later on, Satoshi reveals that he does have feelings for Mayaka, but doesn't want to become "obsessed" with her. He begins to date Mayaka in the spring of their second year.