As Arad got summoned toward Therisa, he called Gojo and asked him to hold his back. He was certain that he could beat Poppy, but he didn't want her escaping like before, so Gojo was there to catch her.
Gojo, of course, didn't mind helping Arad, and he immediately went on the hunt. As Arad was summoned and started fighting, Gojo was already lurking in the shadows of the city like a wraith, keeping an eye on everything and anything, trying to block all of Poppy's escape paths.
It was then that Gojo noticed something strange: the space where Arad and Poppy fought, and the space outside their fighting area was strange. It was like they were separated dimensions, but still just one. It was an impossible reality that he even questioned his sanity; he might've gone mad and lost his mind, but he wasn't.
