He sees the tremble but doesn't comment on it, because between that and the cane Jihwan doesn't doubt this guy has his own share of problems even if he doesn't look too old. He'll murmur a short "thanks" as he's helped up, which turns out to be a good thing since his head swims as soon as he's on his feet, grip tightening on Harry's hand for a moment as his lifts his others to his head and takes a breath or two to steady himself.