A part of Kotetsu - the part that's let him survive as a hero for so many years - is definitely starting to get the sense that he might be in danger. But even those instincts are currently drowned out by relief. He even laughs happily at Asriel's words. "Really? Hey, that'd be great. Even just having someone who could tell him where I've been for the past couple of weeks would be a huge help. Thanks."