A bunch of updates here:

Episode 6 - Shinsen
Episode 7 - Shinsen
Episode 8 - Shinsen

Episode 8 ended in a really interesting way, to say the least. Hard to say exactly what it was: Either a betrayal of the grandest kind or a really wicked plot. If it was the former, this series took quite a turn, if it was the latter, it would continue pretty much as it has thus far. The preview really didn't suggest one way or another. But either way, quite a surprising scene.