On the restoration page, I read this:

"We can only restore deleted characters or retainers if restorable data is available. We cannot guarantee that all deleted characters or retainers can be restored."


Sounds like giving people the ability to restore their characters multiple times may not always be possible if they wait too long. So unless you delete characters as much as you use fantasias, you're not gonna get anything back if you decide to have regrets a year later. Even then, I'm sure asking for restorations too many times might get your restoration privileges revoked for abuse.