Who killed Saya?
While Diva was treated as a mere test subject, Saya was treated more human, as if she were his own daughter and spoiled her. Joel kept a diary filled with information about his observations on Saya. He was killed by Diva on his seventy-second birthday after Saya released her from the tower.
Does Hagi eliminate Saya?
Vietnam War
His blood is taken to inject in Saya’s body to awaken her to help fight chiropterans. However, the untimely awakening makes Saya lose control over herself and go berserk. Hagi tries to stop her but she doesn’t recognize him or his call. Rather she strikes at his arm with her katana, cutting it off.
