Oh no, guys! Just as Gideon Zhi prophesied... I started my localization playthrough and.. the horror! The horror!
Item names are limited to 16 characters. That is a lot worse than the 22 per line for normal dialog. Especially since normal dialogue can scroll forever.
Short cutscene text is limited to two lines of 22 characters. Sort of limiting when I'd like to say "This is the girl's tent. Only one boy is allowed to come in at a time."
I can't change the chapter names.
Some riddles / clues are in the form of graphics instead of text. But I can't find them cuz they're compressed.
The biggest show stopper right now, a bug that prevents me from getting anywhere.. is a particular puzzle where you have to rotate this lever thing left and right the correct number of times (like a combination lock).
<$FE>リ手順と回数を入力せよ。
[nl3] /右1/ /<$FE>ム[end1]

I tried it in my unedited ROM in Snes9x and BSNES. I redownloaded my ROM and tried again.... I played this game once all the way through without any bugs, so I don't understand how this can be happening... I will try to get other dumps and test them too...
If anyone wants to take a look at any of my problems, I will do whatever I can to help.
*edit btw everything works SUPER GREAT and playable up until that game ruining bug. If you want to play up to that part, I can give you a patch.
*edit: after more testing, I can conclude this is NOT a bug caused by my hack. This bug is in vanilla untouched clean ROMs. I have no idea how I got past this part last year or why I am so unfortunate now :/ most common md5sum is b9b77e5f378b871ece75caba82718a8e but this version doesn't work for me, either.. same bug as in screenshot.