AIBOU: Tokyo Detective Duo (Seasons 1–24)

"AIBOU: Tokyo Detective Duo" (相棒, 2002) is a Japanese crime series you can watch online on iFILM. Detective Ukyo Sugishita runs the Special Task Unit at the Tokyo Metropolitan Police — a department senior management treats as a dumping ground for people they'd rather forget. Sugishita himself is precise, unhurried, and observant enough to make everyone around him uneasy.

The show launched on TV Asahi in 2002 and hasn't stopped: more than twenty seasons and upward of five hundred episodes. Sugishita has cycled through several partners — hot-tempered Kameyama held the role for seven seasons, then cool and self-assured Kanbe took over, followed by young detective Kai. Each change shifts the dynamic while leaving Sugishita himself untouched. By any count, it's one of the longest-running detective franchises on Japanese television. Stream all seasons of "AIBOU" online on iFILM.