Back in the Asume Clan, Rean once again appeared on Roan's side. After all, they could use each other's location to come out of the Dimensional Realm as long as they were within 3000km away from one another. Of course, once they do that, they can't return to the place they were before unless they left a save point, which cost Spirit Stones depending on the distance.
Sumeri, seeing that the two were there, asked a few of her subordinates to take care of them for a while. She didn't know how long the Soul Rulers would take to arrive since it was the first time she found humans with the necessary Soul Purity.
The initial plan wasn't for Rean and Roan to appear together, only one of them. However, they decided that they might as well appear together. Because they had Light and Dark Element affinities and were twins, they could use it as an excuse for their high Soul Purity.