The Seven Deadly Sins: Grand Cross SECRET BOX CODE
Escanor’s arrival shines as a bright light upon dark days! For a limited time, players can claim a special reward provided by him.
How To redeem: go to your Inbox > Collect item > Item Storage > tap 1-Use Tab > select the Secret Box > and enter Code
code secret box escanor =SUNSHINE
Secret Box will disappear from Inbox after 5/13
kode box rahasia
Source: Netmarble forum