Sui is a female character in the anime and manga series Darwin's Game. She's one of the core member of the clan Sunset Ravens, and is also, by far, the youngest member of the clan, being 11. She has two souls inside of her body; her own, and the soul of her late brother Souta, whom is able to take control of her body on occasion, and is much more violent and aggressive than her. Sui's sigil. Pollux Light allows Sui to control liquids while Souta can freeze liquids.