Drawing blood was normal for Kurogane. For them both, really. Of course he'd ignored it.
He rotated the shoulder, and while yes, it ached, the sharp and invasive sensation of whatever had been stuck in there was gone. It didn't stick, either. Good.
"It feels... clean," said Kurogane, and he shook the whole arm out, feeling the muscles in his chest and back loosen slightly as the prosthetic settled back into its proper position. "Just don't flail around inside the wiring like that next time." His way of saying thank you.
He had already stood and started reaching for Ginryu at his hip - they'd said Fay would feed when he was done, after all - when Kurogane remembered that he'd had to take the sword off to do the cleaning. He suddenly felt naked without it; he just wasn't quite right when he was unarmed like this, not even in a place with (apparently) no foes to be seen during daylight hours.