Gems are the premium currency in this game. They can be earned in-game by:
- Clearing a quest for the first time
- Stepping on every platform of the map (you do not need to explore them)
- Completing Missions
- Participating in special events
Other than that, the only method of acquisition is to buy them with real-life money. The prices are in yen (円 or ¥), and you can convert yen prices here.
Gems are used for:
- Summoning weapons from the gacha
- Fully restoring AP
- Restoring party HP when defeated in combat - some quests do not allow this usage, or restrict it to only a certain number of occurrences
