How to duplicate Magic
1) Open menu screen via non-battle.
2) Select "Magic"
3) Select any character with the A Button
4) At the magic menu, select Trade (koukan)
5) Highlight the character whos magic you want to duplicate, but
do not push the accept button (A button) yet; only highlight the
character.
6) After highlighting the character you wish to duplicate magic
from, hit the cancel button once (B button).
7) Now you should be back at the first character you highlighted.
Now, select Remove (Hazusu).
8) Move your cursor to the level and space of magic you wish to
duplicate from the character you highlighted. You will hear the
error message but in actuality you have only removed the magic
you don't have (duplicated magic).