There’s a Famicom spinoff of Genpei Touma Den that’s also a board game? I owned two copies of it thanks to buying a bunch of “junk lots” off Yahoo Japan in 2009? I do not know if any of those copies were “complete” and I also never actually played the game cuz I didn’t know a single person who would play a board game. Also dunno anyone who knows Japanese. But that game came with a bunch of pewter (maybe?) ghoulies and a big old board and I bet it would be really interesting to play if you liked studying hard or learning things.
Also my very lazy google search couldn’t turn up good photos of the actual board game aspect, maybe someone else can find some of that shit, it’s kinda cool.