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Unlockables
Alternate Main Menu - Obtain the "True end" of after story
After Story - Collect 8 orbs of light in the main story and finish the playthrough
CG Mode - Collect 1 orb of light in the main story and finish the playthrough
Music Mode - Collect 1 orb of light in the main story and finish the playthrough
Orbs of light in the Main Menu - For every orb of light you obtain in a playthrough (of either the main story or the after story)