When Arad returned to the mortal world, he found himself standing right where the labyrinth was. Around him, no one was there, and he was all alone. Even Gojo seems to have spawned somewhere else.
For a moment, it felt weird. He understood why everyone else would've left immediately after such a battle, but it didn't make sense for Gojo not to land beside him. He checked back his magic, then the location around him, then the flow of natural mana. It was unlikely that he made a mistake, but that was his first guess.
Arad would rather blame himself when something bad happens, because that was easier to deal with as he could actively try to solve the problem. Now, it made more sense since he was fighting Nyar in shattered time and space. He might've gotten confused or disoriented, which caused his magic to fail.
