Ken doesn't have to say anything to break Gokudera's focus. It's seeing a familiar face and that of a child that catches the bomber off guard. He's visibly startled and lowers his hands, then beams at Ken.

"Maybe I just can't concentrate since I've got a lot of stress going on." He taps his temple and then kneels down, decides that looks awkward, and then just sits down. "I could try focusing on a different element..." And he gently falls back so now he's just lying in the dirt, closing his eyes, breathing deeply.