- FKG
- Bond Crystal
 | Name | Bond Crystal |
|---|---|---|
| Type | In-game Currency | |
| Description | Use in the 'Exchange' section to exchange for Leader Medals, Second Affection Gifts, and Equipment Upgrade Materials. Acquired from selling/consuming Flower Knights with rarities of 3* or higher (3* Knights give 10 Bond Crystals and 4* Knights give 200). | |