Beat the game once and make a clear save. This will give you access to the Extra's menu in the main title screen. Every subsequent playthrough extra endings are added to the gallery, as well as Encyclopedia information.
The following information is unlocked once the game is cleared:
|Unlockable:||How to unlock:|
|Gallery||Picture Gallery of all the characters and ending portraits based on your saved game|
|Database||The Encyclopedia of Monsters, Alchemy Items, and Recipe|
|Music||The OST in game|
|Cast||Listen to the thanks of the Japanese voice cast|
|Endings||View all unlocked endings|