Only That

The first thing Soul Gem did when he returned with the others to the Realm of Gods was to help with the communication system. The system Rean created had its own cryptography, but Soul Gem saw it as nothing but a joke. "This kind of coding is truly bad. Take this," He threw several Jade Slips to the experts there. "Have your Formations Masters swap the coding from the one on the Jade Slip. Otherwise, you can be certain that the invaders will be able to intercept all communications with ease."

Gragatou and Himmel had the two main communication system servers in the Realm of Gods, the humanoids' and demon beasts' ones. They quickly arranged for the jade slips to be delivered to the right places. The angels and devils also worked on their own system, but they probably would take a little longer to implement.