But - they have wings (or so), and Isaak doesn't.

(Ghostfoot asked the next best question indeed. (I have a more general one: "What are Ravenkin?" - They wear clothes and have feathers on their arms, that much is obvious. Will there be more info & details later on in the story?))
(Btw., I'll be out of internet from next weekend on until after 2019-01-08. So there will be belated comments until then :))

yeah i mean you don't wanna be the only kid not jumping off a bridge, you'll look like a real loser