Okitegami Kyouko no Yuigonsho

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)