Wakasa Mizushima is a jōnin-level shinobi from Kirigakure and the older half-brother of Zabuza Momochi. He is highly skilled in Kenjutsu and Water Release techniques, and possesses an affinity for Yin Release. Formerly, Wakasa was a member of Kirigakure’s Anbu, where he operated under the alias of Nigauri (苦瓜, lit. "bitter melon") and successfully completed many high-risk missions and assignments. It was during this time that he became known as the "Master of the Hidden Mist" due to his unique combination of Water Release techniques and kenjutsu. He served as a leading Anbu operative alongside his brother for six years until he resigned for undisclosed reasons. While he was originally mistrusted by the other residents Kirigakure due to his blood-stained past and connection with Zabuza, Wa