Funny enough, Slayers was the first thing that came to mind. Tenchi Muyo(also SFC) would be another, this time strategy/tactics.
They both have something in common. There usually aren't long story arcs, and they tend to more episodic(well there are in Slayers, but it's often broken up with oddball one-off episodes). If Lupin ever had one, it'd probably be the easiest one to get into. The worst I've seen with Lupin, canonically, is an occasional 2 or 3 parter.