There was the mention of Yukimi again, and Kakashi would have reached out to comfort his friend from the babbling mess he'd become had he not seemed to preoccupied with whatever he wanted to show Kakashi. The silver-haired nin swallowed again but with trepidation this time, and nodded to hopefully encourage Yamato, to put him at ease to make this - whatever this was - smoother.

And then it was staring him in the face. Kakashi looked with one eye wide (and the other resolutely shut) frozen in the surprise he'd felt at seeing Yamato stripping so openly and quickly without much explanation, but then he understood. Kakashi had seen that kind of scarring before on the corpses of enemies he struck with chidori; their skin scorched along the lines of their veins with lightning as he forced his attack through whatever part of their body he hit... He'd never seen it on a living body before, and never on a friend.

He didn't have words, couldn't fathom speaking, and instead silently rose his hand to brush his fingers over Yamato's shoulder, over the tattoo and the burnt branches of his veins.