Sui

Sui is an eleven-year-old girl who fights alongside the covenant "Twilight Crow" as a D-Game competitor. What makes her existence truly unique is that she shares her body with the soul of her twin brother, Sota, the two of them alternating control through personality switching. Her esper ability, dubbed "Dried-Up Aquarius," grants her dominion over moisture and water. Though naturally timid and deeply opposed to taking lives, joining the protagonist Kaname Sudo's party becomes a turning point—gradually, she confronts her inner fears and evolves into a steadfast and dependable ally.