[Aoi Kurenai]

It's...I dunno. I liked it, but I fully realize that it's not a very well made series. It often lacks internal consistency, so they'll set up rules for any given aspect of the show and break them without addressing them, the characters are pretty damn bland, but I can't help enjoying it. Turboranger is a very "vanilla" series in that it's essentially bad guys vs good guys. There's a bit of a twist around episode 30 or so because this was also a Sentai series that ended up being retooled, but thanks to that you do get some cool arcs of episodes leading up to it.

I guess I mostly enjoy the atmosphere. It's said that after Liveman sorta bombed, Turboranger got the short end of the stick and has probably the smallest budget any Sentai has ever had. Because of those restrictions, the visuals can be pretty creative. It's the first time Sentai did more than just dip its toes into the realm of fantasy instead of super science and you get to see the directors and writers trying to adapt those various aspects to the franchise, so it's cool from a historical point of view. (though Zyuranger is the first full on fantasy Sentai, a lot of Turboranger is still science based)

In the end, even though it's not a great series, I always got the impression everyone working on the show cared about it a lot and it spills over to me as a viewer for a surprisingly fun time.

It's pretty much the same with Fiveman, these are shows that take place towards the end of the longest production staff run in Sentai, so there's this feeling that people are getting tired but still trying their best. These two shows are often overlooked as some of the most bland series in the entire franchise, but they have their merits.