Ruin Explorer
Legend
I mean, there absolutely is an inherent issue.I can see how someone could take issue with the question. I do not believe that there is an issue inherent in the question which prevents it from being answered.
Manga is a medium.
Mediums do not, generally speaking, map to TTRPGs.
Genres tend to map to TTRPGs.
Shonen is a genre, and the genre associated in the mind of many Westerners (especially older ones) with manga/anime.
But as @nyvinter points out, shonen is a truly vast genre. It's almost as expansive as the genre "drama" is re: Western TV/movies, which encompasses any from The Wire to Days Of Our Lives to much of Shakespeare, and probably more expansive than say the genre "thriller" is.
So within shonen, some stuff will potentially map well to Daggerheart, but other stuff - most of shonen, in fact, will not.
Like, if we look at D&D 5E as an example, some shonen does map to it pretty well. As will some non-shonen manga/anime. Like Frieren maps pretty well to D&D. It maps maybe a bit better to some other fantasy RPGs, but it's not bad match for 5E (there will always be magic system discontinuity outside of generic systems). Whereas Jojo is a terrible match for D&D. One Piece, I think kinda almost works (though virtually any superhero TTRPG would do a better job), but Jujutsu Kaisen and Chainsaw Man are terrible matches (though both do match well with other RPGs, mechanics-wise). Haikyu!!, which is a very popular shonen manga about teenage boys playing volleyball obviously doesn't map well to D&D, and probably won't to Daggerheart either.
So you probably want to look more finely at precise properties/stories/settings if you want to think about which work in which TTRPGs.