Nabari No Ou Vol. 6
When Thobari and Kouichi learn that Miahru has joined the Grey Wolves, they resolve to ask him why and whether he has really turned against them. Before they get an opportunity to talk any more, the guest shinobi are all attacked by Koga ninja. Raimei learns from one of them that one of the teachers that ordered them to capture the Banten is the Grey Wolf shinobi.