[@Mega Birb]

I think it's fair for any pre existing characters to advance one level, as long as they don't go over level five, since from there on is a spike on EXP requirements.

I think that no one will be leveling up until the end of the current arc, or maybe some point on the next one so, some fulfillment now is due. Wait for the others' opinion, though.

EDIT: Granted that Nix didn't fought hat much this time, so waiting a bit more on his case may be fair. Just get only and go grind, I promise that nothing bad will happen. :3~