All of those that do not know how the soul works are shocked about Adrian's statement. They tried to look at Levin Cloud to see if he had any other reaction but even, he was silent. If even the envoy of the Twin Gods is silent then that means that everything that Adrian said is actually true.
A being that was born to basically just be a vessel of a god is a tragic fate. Adrian knows this because the two twins Vida and Mortem told him when they were talking about the Twin Gods. The twins also knew that should the Twin Gods need vessels when the world is truly in danger then they would sacrifice their lives for the world.
Adrian felt extremely sad at that statement which is why he did not forbid the two to wander off in the territory. The good side to this is that they would live a normal life as long as the gods that have them as vessels do not descend. This is one of the reasons why Adrian does not want the world to suddenly increase in strength limit.
Edited. I was not able to upload yesterday becuase of a family situation.