The Doll that Took a Detour (遠まわりする雛 Tōmawari Suru Hina) is the fourth installment of the Koten-bu series, released on October 3, 2007 by Kadokawa Shoten, and republished on July 24, 2010 by Kadokawa Bunko.
Collection of short stories about four Classics Club's members activities from time they enrolled to the high school to spring break of the following year.
- If I Have to Do It, Make It Quick
- Committing a Cardinal Sin
- Revealing the True Form
- Those Who Hold Any Clues
- Happy New Opening
- The Case of the Hand-made Chocolate
- The Doll that Took a Detour