Branching Good or Evil Story Paths  -  After you beat the White Bishop, you will be given a choice by the Diva of Twilight. If you choose to keep your wand, you will branch off into the "evil" storyline. If you choose to give up your wand, you branch off into the "good" storyline. Both with different endings.

Unlockable How to Unlock  -  New Game+ Load saved data after beating a final boss.

Unlock the bosses to use in free mode  -  Each time you defeat a boss in the single player, you will be able to use them in free mode. The only difference between the bosses other than appearance are the types of monsters you can choose to have in your party.

Unlockable How to Unlock  -

Bad Path Keep you wand when asked by the Diva of Twilight.
Good Path Give up your Wand when asked by the Diva of Twilight.

New Game  -  After beating the game with a good or bad ending, you will be prompted to save. Save your file, then when you load, you will start back at the beginning of the story, except you will keep all your stats, levels, and items. Also, the enemy NPC's have increased in difficulty.