Maetel Legend(2000)

Maetel Legend is an anime series following a princess from a dying world where only machines can survive. As an evil scientist systematically transforms her loved ones into soulless mechanoids, young Maetel faces an impossible choice: become a machine herself to stay alive, or abandon her world entirely to fight for freedom. With her fiery twin sister Emeraldas also in danger, Maetel must decide what she's willing to sacrifice. The series explores themes of humanity, survival, and resistance against tyranny in a sci-fi setting where the line between life and death has become disturbingly blurred.