The entrance to the underworld

Ren stepped outside of the portal and the first thing he saw was a gigantic door made of bones. The bones on the door were made from different species from humans to dragons. The aura the door emitted was that of the purest form of death energy. If that wasn't creepy enough the sounds of screaming souls could be heard from the other side. 

Ren and his companions could feel a lot of powerful energies being gathered beyond the gate. It was at that moment Ren also noticed another door beside the door of bones, it was a door made of pure energy. The energy emitted by the door was like a combination of Ren's mana and Spirit Aura, coupled with multiple other kinds of unknown energies. It was the purest form of energy and Ren had sensed something similar before.

It was the same form of energy that the original incarnation uses. Ren then looked around if there was anything else but there was nothing.