I would have suggested a Valkyrie Profile game, but apparently they are mostly only available on playstation consoles, which is unfortunate. If you should have access to one such console, i'd say try one out. I found original VP to be quite interesting when i did play it some years ago.
Well, you do slip into the role of women in there, so that would probably be not acceptable for you. Though technically, i don't know if a valkyrie would count as some kind of undead...
Also i think Final Fantasy IX is very beginner friendly while emitting strong jrpg-vibes at the same time. Even it's an older game by now, it could be very well worth playing for someone interested in jrpgs, as it's a classic. It is basically just what you ask for.
Or try one of the newer Zelda games. Though you would probably need a switch for that, no idea if current emulators are capable of running the game somewhat well on PC.