I just caught up too.
Spoiler for up to ep. 12:
Poor Hayato. He really is Tetsuro. (I bet that was a real shock.) He became the Skull Man which really is ironic since every one was saying that Tetsuro was the Skull Man and accusing Hayato of being the Skull Man. He's going to lose everything but his life just like the ED animation suggests I bet.
Even the title of ep. 13 seen at the end of ep. 12 suggests it. He is so screwed.
At least it opens this thing up for sequels. The only thing one has to do is pass the skull onto someone else.
Can't wait for episode 13!
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I was expecting a great series considering the production values for ep. 0 and ep.1 overall. I felt that it delivered 100%. It's not a "hidden jewel" at all imo. It just didn't receive the fansub circuit buzz that only a few other titles have gotten imo. There are loads of good to great titles not receiving fansub circuit buzz out there.