But to name a few:
– Seishirou: Princess of Darkness (PSX, Strategy RPG): All scenes between battle maps are fully voiced, but there are no instances of going into town and talk to NPCs)
– Lunar Wing (PSX, Strategy RPG): (same as ‘Seishirou: Princess of Darkness’)
I remember all the way back when PC Engine was trying to make RPGs with voices in them like Cosmic Fantasy (I think that’s what it was called) and such.
I can think of a good many WRPGs off-hand where the majority of (or all) essential and non-essential characters get a voice but not so among JRPGs.
funny, google gives me this thread as top result when I look up "fully-voiced JPRGs".