Shirogane tchhed under his breath, and leaned the broom against the wall behind Kai's chair. He didn't know much about Kai's background, but he was learning to read his body language, his expressions. One of the first things he'd learned was how much touch seemed to help.

(And maybe he liked that, too. He hadn't really had anyone to comfort.)

He was careful about it, though. Still didn't know what could trigger Kai. He touched Kai's shoulders gently, then started to rub. "You'll get it," he murmured.