User blog comment:Evil 1/Onmitsukido/@comment-1268838-20100910114440

It's been elaborated that the five divisions of the Onmitsukidou are lead by the Captain, Vice Captain, and 3rd-5th seats of the 2nd division. However, while the two groups have been stated to be closely linked, I don't think it ever said that every single member is also a part of the 2nd division.