Secret Items and Kenpu in Kingdom of Paradise:
At the title screen, go to download and when you get connected, enter these codes to get certain items.

Note: Entering these codes are the only ways to get these items.

qucmtkb - Kirin Kenpu 31*
kakeiti - Seiryu Kenpu 31*
myuicei - Suzaku Kenpu 31*
jticgek - Seima Bracelet
otkciet - Seima Hair Pin
xktmvut - Seima Ring
aietmaw - Seima Accesory
rkjulvj - Miracle Sword - Attack +14
ptiuquc - Byakko Kenpu 31*

Loading your endgame save in Kingdom of Paradise:
After you beat the final boss and get past the final cut-scene and credits, you are given the option to make an endgame save. If you load this savegame, you start a new game, but you get to have all the sword scrolls, equipment and inventory items that you had from your previous game.

Pure San'yuan Bugei in Kingdom of Paradise:
To Unlock the Pure San'yuan bugei you must beat the game and save your game after the credits. Once you continue that file you will start over with all of the items you had in your previous game and have the Pure San'yuan kenpu in the Bugei Scrolls section.