I don't have much to say about Five Kamen Riders vs King Dark. Its less a full story than a commercial for the Kamen Rider X television series. It's funny that its footage was ripped for Hanuman and the Five Kamen Riders but you could probably find much more fulfilling Kamen Rider content if that's what you're after.
Still, I love the giant King Dark puppet/prop. Absolutely gorgeous! and the widescreen framing is very complimentary to it.