Time Limit Investigator(2006)

Time Limit Investigator is a Japanese series following Shūichirō Kiriyama, a bureaucrat at the Limitation Task Force who processes cases that have expired under the statute of limitations. Bored by the routine destruction of files, Kiriyama seeks purpose by investigating these cold cases in his spare time. His curiosity draws him closer to Mikazuki, a coworker who assists his amateur detective work while nursing an unspoken attraction. As Kiriyama pursues the truth behind forgotten crimes, he discovers that some cases deserve a second chance. The series blends procedural mystery with quiet character drama, exploring how the pursuit of justice can transform an ordinary life into something meaningful.