During the event period, you can get a reward if you buy a certain amount of Gems.
If you purchase a cumulative amount, or if you purchase Gems other than the specified amount, it will not be counted.
"Purchase 450 Gems on the Gem Purchase Screen"
・[470 Gems] (450 Gems + 20 Bonus Gems) achieved during purchase
Each reward can only be obtained once a day, the number of obtained and achievement status will reset every day at 20:00(UTC)