The eleventh instalment of the Boukyaku Tantei Series.
 
Okitegami Kyouko—her memory resets every time she sleeps. Taking advantage of this characteristic, she works as the "forgetful detective". In the name of business, she sets out on a trip with her bodyguard, Oyagiri Mamoru. She has no particular destination in mind. What kind of incident awaits them on this trip?
 
(Source: Kodansha, translated)

The tenth instalment of the Boukyaku Tantei Series.
 
The only employee of the Okitegami Detective Agency, Oyagiri Mamoru, receives a sudden threatening phone call. "If you want Okitegami Kyouko back, you'll have to come up with one billion yen." He is the only one who can rescue the lonely forgetful detective. Although he doesn't have the powers of deduction like Kyouko-san does, he does have a "memory" of her. Mamoru begins his investigation with his own hands. Meanwhile, Kyouko-san wakes up in the presence of the murderer—? The pure white Okitegami Detective Agency vs. the jet-black kidnapper! How will this head-to-head battle end?!
 
(Source: Kodansha, translated)

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)

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