Alex had several problems to get past. Unfortunately, this was a lot more complicated than getting into the Demon World had been.
Last time, they had only needed to slip past the System's notice for a brief moment before crossing into territory where its authority was much weaker. This time, they were heading straight into a Summoned World under the System's protection. Hiding who they were for a few seconds wouldn't come close to being enough.
If they interacted with the world without the proper authority, the System would recognize them as intruders and deal with them accordingly. Alex still remembered what had happened to the Sylphs who tried to invade Earth, and he had no desire to find out what that punishment felt like firsthand.
Then there was the world they had picked.
