But a journey like that is dangerous. She could be hurt or die, so he wanted companions to travel with her and protect her. Fay-san was his, and Kurogane-san was meant to be but someone intervened. I refused.
So he used his magic to make a copy of Sakura, so that if she should die on the journey, he could simply make another and try again. And he made a copy of me, but created him without a heart. He would be a soulless thing that would act only on his creator's whims, and behave recklessly and violently.