Hey, there.
I've started the process of implementing Gen II support in PKHeX, following my just adding Gen I support.
I'm currently working on implementing save file loading/reading for GSC saves -- this is easy for English games, because bulbapedia documents save offsets well for those here.
However, Japanese offsets are not so well-documented; I'd like to ask, then, if people could help out by documenting them while I work on implementing the other features required for PKHeX's Gen II support.
The Japanese offsets that need documentation for full PKHeX support (both GS and C need offsets):
-TID
-OT Name
-Daylight Savings
-Time Played
-Player Palette
-Money
-Johto Badges
-TM Pocket
-Item Pocket
-Key Item Pocket
-Ball Pocket
-PC Item list
-Current Box Number
-Pokedex Owned
-Pokedex Seen
-Player Gender (Crystal only)
Strictly speaking, Checksums also need their offset located, but I can take care of that when the time comes.