[DreamSword]

Can't really agree with those who claim Agito, personally. Like, yeah, it's not bad, but even as someone whose favorite era of KR is Phase 1 Heisei, I still think of it as one of the weaker entries. Plus, as time goes on more and more people seem to be giving Agito alot of love, so...

Had you asked me this a few years ago I would've said Blade, but like Agito, more and more people have been finding a fondness for it over time. Is it the best Rider show ever? No, but it's one people should check out.

Honestly it's hard for me to think of any Rider show as "underrated" all things considered, since every season has its hardcore fans.

So I guess I'll give a total copout answer and say every season that isn't one of the super popular ones. So any that aren't Den-O, Gaim, etc.