Board Thread:Jobs Board/@comment-26391060-20131014151311/@comment-6697950-20131014162252

For the first part, you are correct. The whiskers are drawn as soon as the quest is accepted and the NPC explains the quest to the player.

For the second part, the markings are always whiskers, since Argo called Kirito Kiriemon (Kirito + Doraemon) and the only reason why I believe she would call him like that was if he had whiskers.