If you've played any of Final Fantasy VII Remake, it's quite similar. It's real-time and quite hacky-slashy, although there are menu-based magic attacks. The plot is completely bananas, as you probably have heard, but I don't think it's the good kind of crazy.
I've often felt that Kingdom Hearts could have benefited from using a similar format to the Final Fantasy games. Just have each game be a self-contained story with different characters, and with different Disney worlds. Having an overarching plot that's years-long, incredibly labyrinthine and initially requiring half a dozen different game systems to play, is such a baffling approach to what ought to be something that's simple and child-friendly.