So what are you viewing the text with? A regular hex editor set to CP932 or what? Have you checkes Shift JIS and EUC-JP yet?
It might be worthwhile if you posted the full hexadecimal sequence instead of a string, since that undergoes many conversions until it's here.
Right now your string is U+30DC, U+30BD, U+30F3, U+3067, U+FF62, U+0012, U+FF79, U+0010, U+3002. I gather this is probably not what you are seeing or what you are converting from.

cYa,

Tauwasser

It looks like it may be a dictionary. 出発 and です are both very common words on their own, so they would merit a dictionary entry, while ボタン might not. If you can access the part via a savestate or something, try editing the A212 to A213 and see if a whole different word appears. If so, search for the word 出発 and the other word in the file and see if you can find the dictionary. Right now it would seem that both values are much much higher than the standard 81-83 range the other stuff uses.

I checked with the other tables I mentioned and they didn't return any positives, also the data length you have there would suggest it is not a clever compession per sé.

cYa,

Tauwasser

Simply change B910 to A212 to confirm the dictionary compression. After that, it's just finding the dictionary or getting a debugger or something for DOS.

cYa,

Tauwasser

Nowhere. There's no universal tool for that. As for dictionary: find the dictionary, see the pattern - change it.

Thanks for your time Tauwasser, still I don't think it's a dictionary... depending on I put the A212 the results are too different, sometimes the game freezes
This is what I see on the screen during the game:

村のはじっこから、
~B00ボタンで出発です。
気をつけて行ってきて
くださいね。
お帰り待ってま～す！

So the theoric string is:

91BA 82CC 82CD 82B6 82C1 82B1 82A9 82E7 8141
7E 42 30 30 837B 835E 8393 82C5 8F6F 94AD 82C5 82B7 8142
8B43 82F0 82C2 82AF 82C4 8D73 82C1 82C4 82AB 82C4
82AD 82BE 82B3 82A2 82CB 8142
82A8 8B41 82E8 91D2 82C1 82C4 82DC 8160 82B7 8149

while I have in the hex:

村の‚PﾍれｱＵA
~B00ボタンで｢ｹ。
気ｈ   îï¾‚けて忽ｫて
-)ｶAり待ｇﾜ～す

91BA 82CC 82 18 50 CD 82 EA 10 B1 82 74 16 41
7E 42 30 30 837B 835E 8393 82C5 A2 12 B9 10 8142
8B43 82 88 09 F0 82 C2 82 AF 82C4 8D 9A 1E AB 82C4
2D 29 B6 18 41 82 E8 91 D2 82 87 17 DC 81 60 82 B7 81 49

I think it's a strange partial encryption... the game uses at times to insert in the string 2 hexadecimal like in first Monster Hunter ( 82 18 50 CD for 82CD or 82 88 09 F0 for 82F0 ) allowing however to modify the characters, sometimes uses to convert the characters in some 'untouchable' hexadecimals ( changing them all the dialogues are altered not only those changed), modifying occasionally the hex reading like in the 4° row, where the entire string is readen like something different but the hexadecimals are most the same...

I hope I made a quite 'clear' explanation of the problem I ran into but... well it's quite a mess