This feature is currently only available on the JP server. For the NA server, see Magia Chip.
Destiny Crystal is one of the currencies.
How to Obtain
Crystals can only be obtained by acquiring more than 4 copies of a 4★ Magical Girl.
Each extra copy can be traded for 1 Destiny Crystal through the Magical Girl Menu.
Note: Extra copies of Akemi Homura (Megane ver.) can NOT be exchanged for Destiny Crystals, and she is not available for purchase in the Destiny Crystal Shop.