The sixth instalment of the Boukyaku Tantei Series. The forgetful detective Okitegami Kyouko gives her "first" lecture. A dangerous love question is posed towards Kyouko-san while she's on stage leads to a false accusation, and a young man named Kakushidate Yakusuke receives an unexpected proposal...... Will the beautiful forgetful detective be able to stop the cursed marriage? (Source: Kodansha, translated)

The third instalment of the Boukyaku Tantei Series. Kujirai, a man not aiming to commit a perfect crime. The beautiful woman he chooses as his "alibi testimony" is a white-haired detective who, worst of all, can only remember one whole day...... In the latest short story, "Okitegami Kyouko's Alibi Testimony," where the forgetful detective becomes a witness in a murder case. The newest story in the Forgetful Detective series brilliantly written by NISIOISIN! (Source: Kodansha, translated)

The fourth instalment of the Boukyaku Tantei Series. Kakushidate Yakusuke is a young man with a history of false accusations. All kinds of misfortune befall him, and now a girl has fallen on top of him! A time-constrained mystery about a forgetful detective who loses her memory every time she sleeps! A junior high school student attempts suicide by jumping off a building. A twenty-five-year-old young man named Kakushidate Yakusuke is present at the scene, but due to his innate tendency to be falsely accused by others, he is made a suspect. A suicide note, allegedly written by the girl, is left at the scene. Will Kyouko-san be able to clear the suspicions and solve the case? (Source: Kodansha, translated)

There is a murder in Central Park, the favorite haunt of New Yorkers! The murder weapon is a shuriken, the ninja's favorite assassination tool. Based on eyewitness reports, an NYPD detective visits the "Okegami Detective Agency, New York Branch" newly established by Kyoko Okitegami, an absent-minded detective. When Kyoko is singled out as a suspect by the NYPD, will she be able to clear her name and solve the case? The fourteenth installment of the *Boukyaku Tantei* Series.

The seventh instalment of the Boukyaku Tantei Series. The famous detective known as Okitegami Kyouko loses her memories whenever she sleeps. She solves every case she takes on the same day, but today she receives a difficult case from a troubled detective. For some reason, she is called to an amusement park instead of a crime scene. The request is to clear a huge escape game faster than a suspect in a case......? She is beautiful, fashionable, and loves money. A time-constrained mystery with the forgetful detective, Kyouko-san! (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)

Tasuku's father, a researcher in the field of Artificial Intelligence, was the victim of a mysterious death, leaving behind him AI (Artificial Intelligence) twins: a detective and a criminal. With the help of the detective, Ai, Tasuku decides to look for his father's killer. However, during his quest he discovers that the criminal AI, Ia, has been robbed by the terrorist organization Octa-Core, who uses her to commit crimes. Difficult cases assail him one after another, and in the process, he discovers the truth behind his mother's death as well as Ia's goal.