It's just one word, good, but Klaus clings to it. Never before has he received any sort of praise when trying to get a handle on his powers. Nothing he did was ever enough, he was always too weak, too scared, too much of a disappointment. He's so used to being berated that one single bit of positive reinforcement buoys him enough to take another deep breath.

"You can't hurt me," Klaus says again, wincing and pressing his fingertips into Obi-Wan's chest as the ghost starts to scream. It's a sharp, piercing sound that he can feel rattling around in his rib cage and he grits his teeth, reaching up to put his other hand over his ear as he begins to shake. "You can't hurt me."

"Klaus!" She screams it so loud that it seems to shake the trees, and Klaus's fingertips start to glow as he takes a deep breath and imagines himself pushing her away. "You can't do this!"

"You can't hurt me," he grits out, letting out a cry of his own as he shoves his power outward as best he can, feeling it snap outward like a dam exploding. Once it's done, Klaus's chest is heaving and he opens his eyes slowly, panting softly as he blinks against the sunlight to find themselves alone in the clearing once more. He sits there, stunned, fingertips still glowing slightly where they're pressed to Obi-Wan's chest.