Yussa follows Caleb through the door and immediately puts his arm up, trying to block the bright light to give his eyes time to adjust. After walking through the Astral Sea - or an approximation of it - the sunlight is welcome. Slowly, he lowers his arm. He backs up to the nearest wall, strangely grateful that there is a wall, and for a moment he lets himself lean against it.

He would rather not do this in front of Caleb, but of all the people living in this world, perhaps Caleb Widogast is the one who would nearest understand. He takes a shivering breath and tries to control the exhale. Without saying a word, Yussa crouches down, knees to his chest and hands folded over the back of his neck, keeping his head down as he breathes. It will pass. This moment will pass. It is inconvenient, at best.

At worst, it is a slippery slope into memories he's grappled with since Caleb freed him. Yussa's hands move, sliding to cover his ears even if he knows the screams he can hear are in his head. This will pass.