Okitegami Kyouko no Chousenjou(2015)

Okitegami Kyouko no Chousenjou

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)