Clockwork planet

"Even though AnchoR is RyuZU's little sister, her immense power poses a threat to Naoto and the crew. When the two siblings confront each other, an explosive battle ensues that bends time and space! Even RyuZU's Imaginary Time and her unique power, Mute Scream, may not be able to best an automaton built to destroy. Meanwhile, in Akihabara, a massive weapon appears, leaving the city's armed forces at a loss. If Grid Akihabara falls, all of Japan may be in danger. Can Naoto handle a weapon strong enough to break the entire Clockwork Planet?"--Back cover.