So, was Cyber Sleuth just an awkward entry point?

I recently finished Cyber Sleuth, and while I enjoyed it mechanically, and seeing all the different digimon designs for the first time was a lot of fun, I kinda feel like the game expected me to know a lot more than I did going into it. Like, particularly near the end, there's a lot of characters that read like cameos but stick around?

Is this just an awkward entry to start with? I know from my little brother watching Digimon while we were growing up that the cast changes sometimes, so I figured it wouldn't matter much, but it feels like the overall structure was supposed to be better understood than I was capable of going in.