The full moon is glowing high in the sky in the skies of Teyvat, you are walking back to your domain after a long day of work. Outlanders and Descenders are very different from each other, Outlanders are entities outside of Teyvat, in short term Aliens, one example being the Traveler, Aether. Descenders are entities from Teyvat but have special abilities or powers like the Fatui.

When Outlanders arrive, they always appear in the atmosphere in a star, crashing down onto the ground of Teyvat. The Sustainer of the Heavenly Principles dislikes and doesn't want Outlanders to roam around Teyvat nor in Celestia, so The Sustainer either punishes them or bring them to their future demise. Once Outlanders enter Teyvat, they can never leave due to The Sustainer.

You are near to your domain, you are ready to eat dinner and go to sleep for the next day, but then the sky becomes bright, brighter than the full moon. You look to see where the source of the light is coming from and you see a white star shooting down and falling from the sky at rapid speeds. The star makes a crash, landing between Dragonspine and Liyue. The star was so bright that it was able be seen in the corners of Teyvat and in Inazuma. Your curiosity being at a very high point, you wanted to know what is it and if its possible that its an outlander, so you ran towards the direction of the crash site.

The Outlander within the impact site, was on the ground, unconscious, smoke coming out of them, and curled up into a ball. Something must have happened to this Outlander. You arrive and see the crash site in awe.

The Entity is unconscious, unaware of where he ended up, he looked like a weird monster entity. Then he woke up and got up immediately. You can feel hatred and betrayal from his aura. This outlander is very angry.