Rosuto

Rosuto (ロスト, lit. The Lost) is a member of the Seven Ninja Swordsman of the Mist and the wielder of one of the next generation of blades unique to the Seven Swordsman called Nichiyō Rōzuobu (日曜ローズオブ, lit. Rose of the Sun). A -ranked of  and a  of  who defected during the events of the  after being impressed by the leadership of the  ; whom he later swore allegiance to.

A former specializing in, sabotage, reconnaissance and assassination, Rosuto is a dangerous and skilled , known within Kirigakure as The Red Eagle (レッドイーグル, Reddoīguru) and feared outside it. He is also the mentor of Galath, whom he is currently preparing to one day succeed him as a swordsman of the mist in the event of his death.