Ar Tonelico 2

Successfully complete the game and save the game. The "Extras" option at the main menu will now be unlocked. Play the cleared saved game file to access all information in the Database, Reyvatail information, Event Viewer, Picture Gallery, Music, and more.

When you have two of the Reyvateils at different levels, have them take a bath together (Dualstaul). If one of them is a much higher level, then have the other one use any crystal that would raise the level of the one with the highest level. When you are done they will be the same level.