Old Grudge

That old man isn't bring a justice. He actually has no qualification to be wronged.

He wanted a long life, no problem when it was taken from others, but made a fuss when it was taken from his young son. He tricked Jaeshin in that game, why would he expect an honest reward?? He played a stupid game and win a stupid reward. He should know better not to trust an immortal creature, let alone offend them by a cheap trick.