Battle Angel Alita Mars Chronicle 6 — Yukito Kishiro

Alita and Erica escape Gillatin unscathed, but end up in the hands of Duke Marquis, who intends to install Alita as the new Lady of Cydonia for his own nefarious purposes. But a hitch in the Ritual of Succession unfolds into a shocking revelation as the secret origin of Yoko, the girl who will one day become Alita, is revealed at last!