You can get them as rewards for completing certain missions or for viewing the story, or buy them from the Crystal Shop.
Game Mechanics 1
- I'm having trouble increasing Trust Ranks.
- How do I earn Trust EXP?
- What are Trust Ranks?
- I can't receive crystals from Area Conversations.
- How can I get Music Cards?
- How can I get a 3★ Select Voucher?
- Where can I use a 3★ Select Voucher?
- How can I get Wish Pieces and Wish Jewels?
- Is there a limit to how many Coins and items I can have?
- Where can I view my items?