Once Aaron stepped into the portal, he felt a tearing sensation. This was not like the dungeons. The dungeons are a part of the world, but ruins, they are a part of the world and at the same time are not.
Ruins are pieces of destroyed worlds that drifted here and got attached to this world. Unlike dungeons, they didn't originate here.
So, everything would be different. Even the portals that lead to the ruins are not as safe as the portals that lead into dungeons.
Luckily, the ruins where the competition was being held in was a place that had a stabilised portal as it had almost fused with this world, making it a part of this world, rather than a part of another world at this point.
Even if that is, there is still discomfort while passing through, and that is what Aaron experienced. It was only for a moment before he entered the Undead Ruins.
Aaron breathed in a little, "It feels cosy", he muttered.
