as I expected, the value for this game is easy to search and to edit. there are two value that is needed, money and exp. here is the steps i usually use:
1. load the game from flashdisk save
2. seek the value of exp,money also if you want.
3. remove the flashdisk.
4. extract the save by using usbxtafgui for orochi2 file (without any extension) and open the file with le fluffie app for extracting orochi2.dat.
5. open orochi2. dat with any hex editor, search the value in hex value, edit as much as you want. from my exp, if you edit value exp to 999,999 it will give you temp infinite exp points, you can boost one char to lv 99, but it will be normal again for next character. money can be modded into 999,999
6. save the edit. replace orochi2.dat with le fluffie, fix (rehash) and reinject orochi2 file with usbxtafgui
7. load again the game from start screen and you can see the value is modded.
any program to simplify this process is very welcoming