Ryuunosuke Nagumo

Ryuunosuke is Minami Hizuru's twin brother, who lost his life in the Shadow Incident fourteen years ago. Rather than disappearing entirely, his consciousness and data took refuge within his sister's body. Whenever Hizuru ties her long hair up, Ryuunosuke assumes control of her consciousness and enters combat, drawing on exceptional physical capabilities and a brief ability to foresee the immediate future. He serves as an indispensable ally to Shinpei in the fight against the shadows, turning the tide across multiple time loops to help protect Hitojima alongside the others.