In case you need this.
How to Reroll :
Delete Current Account (Data), You start from the beginning.
*Don't worry, you will be Teleport to Tutorial Gacha / Skipped Tutorial if you already did that at your first Gameplay
How To Save Account (Data) :
at setting, Scroll down, Click/tap here.
Input password for that ID (Your Choice)
*In case you forgot, Better Screenshot and rename the picture name with ID/Password.
How to login to your account again :
Input The ID and Password.
Return To Title Screen
The Middle one is reset setting to default.
Starting Time after reset data (Tutorial Skipped)