This can be acquired through the 10M Downloads Festival Login Bonus.
By using 5 Summon Tickets, you can perform a Festival Summon.
▼Festival Ticket Summoning Period
After maintenance on July 11, 2019 until 23:59 on August 28, 2019
If there are unused tickets after the event period, they will be deleted.
For more details on the above-mentioned content, please check here.