Kaina Tsutsumi, also known as Lady Nagant, is a significant character in the series Boku no Hero Academia. Formerly a Pro Hero, she became a villain after losing faith in the society she once protected. Lady Nagant possesses the Quirk 'Rifle,' allowing her to transform her arm into a rifle for long-range attacks with extreme precision. Her backstory reveals a deep disillusionment with the Hero Commission, which she believes manipulates and controls heroes. Her character challenges the protagonist, Izuku Midoriya, pushing him to question his beliefs about heroism and justice.