After Dalia and Eldriana were done saying their goodbyes to everyone, they were ready to leave. Obviously they could not say that they were going to leave this world, so they just said that they were going to a faraway place for the next part of their training which was not really a lie. And that was the reason they told everyone. Dalia and Eldriana were not sure if they would be able to meet once again but Elena reassured them that she would bring them here some other time so that they would be able to meet their friends once again.
So with that assurance from their beloved elder sister Elena, Dalia and Eldriana were able to say goodbyes with a peaceful mind. After all that was done it was finally time to say goodbye to DAMIOS.
Before leaving Elena went to the core of the world and said her goodbye to Youel there. After promising her that she would come to visit her again soon, finally she teleported everyone out of this world.
...
