Clockwork Planet Vol. 4 (manga)

With the sudden appearance of AnchoR, the "sisters" of the Initial-Y series are reunited, but it may not be a happy meeting! Whatever her intentions, this tense encounter means that underground conspiracies may finally come to light. From learning of hidden weapons and a nefarious plan of destruction, the group may be in for more than they bargained for. This time Naoto and his allies may have to go all the way to the top to find justice.