Depends on what "difficulty" means. Grinding? no. Finding some random item randomly on the screen? no. Turn based combat? IF its not RPGmaker then sure. (RPGmaker is kinda bad...)
I'd have to agree, if you can't remember what's going on after a short time to refresh, then the story wasn't worth it to begin with... though the "research" material might keep people around if its good enough if you know what I mean.
This is a great game, but the content being made right now is slightly stalling the story. The content is expanding on the range of content instead right now. Honestly one of the better games of this specific niche.