0x01 is a control code to switch between hiragana and katakana. So:
(some japanese text) 0x01 (some more japanese text) 0x01 (even more)
the first text will be in hiragana (or perhaps katakana, I forget which this game defaults to), the second japanese text will be in katakana, and the third will be back in hiragana again
at least, this should be the case according to my memory and notes... perhaps there are some other characters on each table, like switching out some kanji etc. i don't recall if english is present in both or not, but that's easy enough to check