Hōzuki Castle

, also known as the, is a criminal containment facility that is the main setting for the movie Naruto Shippūden 5: Blood Prison. Its master is Mui, who uses the ultimate imprisonment technique to steal powers from prisoners. Naruto Uzumaki was sent here after he was falsely accused of attempting to assassinate the Fourth Raikage, and killing jōnin from Kirigakure and Iwagakure.