The twelfth instalment of the Boukyaku Tantei Series.

Someone calling themselves "9010" has posted a bomb threat on the internet. The time limit is nine hours. The ace of the bomb squad, Ryouinu Azana, manages both the explosives detection dog and the guide dog, proceeds with the investigation. Meanwhile, the forgetful detective Okitegami Kyouko joins in at the request of the suspect, Kakushidate Yakusuke.

Even with the swift deduction skills of the forgetful detective, will she solve it within the time limit?!

(Source: Kodansha, translated)