You can create one character for each social media accounts that you link to the game.

But, when playing on a guest account the charater information will not be saved when you delete or reinstall the game. Don't forget to link to your social media account to save game data.

[How to link your social media account]
1. Create a character using a guest account
2. Settings in the lobby (▲button on the right side of the lobby, tap Settings)
3. Click social platform icon from 'link account'
4. Click 'OK' on the link account popup
5. Check the guide of using an account and follow the steps

Only one game can be linked to one social media account,
and it's not possible to link again once an account is already linked to a social platform.

Also, information from a linked social media cannot be transferred to another social media account.