Humans and Reploids can now reside together. Ciel talks with Cial and she comes back to her senses, making a truce with Ciel. He outmatches Zero who spent a great deal of time in his Rockman Zero form before reverting to his meek self, but manages to narrowly defeat him with the Z-Saber. Copy X appears in his Ultimate Armor only as the fusion between all four of the Guardians, but is not named in the manga. It is discovered that the mastermind behind the tyrannical rule is Cial, Ciel's younger twin, whose ideals of a better world mirrored Copy X's as she tried to eliminate all Reploids.