Ryūzetsu

is the mysterious kunoichi that appears in Naruto 5: Blood Prison. Ryūzetsu is a childhood friend of Mui's son, Muku. Just like Maroi, she also has an undercover mission in order to investigate Mui as to the disappearance of Muku when he was still young.

Personality
Ryūzetsu is mildly serious as she was not amused by many of the things Naruto's antics, she was very strong willed and quick witted but has shown to have some form of feelings for Muku she is not above putting her life on the line or dying for friends, as seen when she not only jumped in front of Naruto and was impaled by Muku, but as she also gave her own life to save Naruto's.

Appearance
Ryūzetsu has shoulder length white hair and blue eyes with multiple circular patters much like Kurenai Yūhi. She wears a sleeveless kimono over a green top that only has a long green sleeve covering her left arm and a green bandana. Both her arms are bandaged up to her elbows. She also wears black trousers with shinobi sandals.

Abilities
Ryūzetsu can create fire-like apparitions. She can also use a technique to heal or restore life in exchange for her own.

Trivia

 * Her name means "dragon tongue".
 * Ryūzetsu has Rinnegan-like eyes, except they are lighter with a smaller ripple effect.