- Singapore, Phillipines, Malaysia (UTC+8)
- Start: 05:30 06/04/2017.
- End: 23:59 13/04/2017.
- Indonesia, VietNam (UTC+7)
- Start: 04:30 06/04/2017.
- End: 22:59 13/04/2017.
- In the main screen, tap Event -> choose Cloth crafting request from Momo.
- STAR begins to gather material to craft The Purest Heart suit, then claim the reward after finishing.
Instruction on how to join Under-Moon Ball Event:
- Step 01: in the main screen, tap Event-> choose Elves Under-Moon Ball
- The reward will not be sent automatically. Stars must go to Event and claim it yourself.