シオン

Sion is a felix, in other words, an artifical human who doesn’t age and has very high intelligence, created solely to rescue the human race from destruction. She fulfilled her role well, designing an engine for the escape ships and other necessities for human survival while juggling a strong political influence. In fact, she is a household name, known as “the girl who saved humanity”. However, despite her vast knowledge of the world, she has never left the research facility where she was born for the entire century of her existence. Described as “a princess with a poisonous tongue” by Ryou, she’s keenly curious of the outside world, wanting to see just what really exists outside of her home.[Edited from Choux's review.]