Completion bonus:
Beat the game and load your cleared saved game file to start a new game
and earn double the experience points, Gella, and CSP. Each new session
with the cleared game file will increase this bonus by one (triple the
value on your third session, etc.).

Duplicating items:
To duplicate items, equip the item to be duplicated. You must only have
one of that item. Get into a Free Battle with a Harpy, which can be
found in Bandit’s Forest. Have Labyrinthia create a Replica in front of
the party, and wait for a Harpy to use “Steal Item” on the Replica. Have
the real Labyrinthia use her copy of the item, then finish the battle.
You will now have 255 (appears as 0U) of the item to sell. The Gella
Card is worth 380,000 each time. Repeat this process as many times as
desired. Note: Other items in your inventory may become inaccessible in
some menus. To fix this, save the game and reload it after you are done
selling.