If you tried typing with an IME in the text part of the hex editor window rather than using the hex editor section I could see something happening. Otherwise for a ROM, even if this is a homebrew/"bootleg" game, to self modify is something odd.
I am still more likely to assume user error or that you have a programming style keep this ROM up to date with my change management/backup type setup going on.
I am still more likely to assume user error or that you have a programming style keep this ROM up to date with my change management/backup type setup going on.
