Since the same day Takeda Shingen called Nana with a request for a prosthetic arm, she had been cooped up in her room day and night, making fingers, joints, plates for the arm, even creating full arms that could easily be adjusted to fit its wearer. One arm she worked on in particular, was a more slender model, shaped a bit more smaller and natural looking. It was a steel aluminum hybrid to allow both sturdiness and to keep it light weight. She worked meticulously, redoing parts multiple times, and polishing the metal until it was almost like a mirror.