I did not finish playing the game in Japanese due to the chained-encounters making you fight overwhelming numbers of enemies.
(what I mean is that when you beat one enemy party, another instantly spawns, and you only get money and EXP for winning ALL encounters) It happens sometimes in early dungeons but becomes pretty much every battle by about the third region.
I got annoyed at it enough to dig and figure what ROM address to change to make all battles only one encounter.
Perhaps it was to balance the scarcity of encounters (encounters seemed to rarely happen outside of walking through doors) but I'd rather have more encounters with small groups than a low encounter rate with huge mobs.
Also, finding the fourth boss seemed kind of ridiculous, though it's very possible my poor Japanese skills made me miss a hint that would've let me find it without an FAQ.
I wondered why the dungeon seemed insanely long but it seems I had actually wandered into the fifth dungeon (Hell?
) before beating the prior boss.