Naruto Shippuden the Movie: Blood Prison

Naruto Shippuden the Movie: Blood Prison opens with Naruto being arrested and imprisoned in Hōzukijō — the Blood Prison — after being falsely accused of attacking the Raikage. His chakra is sealed by the prison's warden, Mui, using a technique called the Sky Prison Control, leaving Naruto effectively powerless in one of the most dangerous shinobi prisons in the world. The film's plot involves uncovering who framed Naruto and why, and the Box of Paradise — a sealed container whose power Mui seeks to access using Naruto's Nine-Tails chakra. The prison setting creates a genuinely claustrophobic atmosphere unusual for a Naruto theatrical entry.

Blood Prison is generally considered one of the stronger Shippuden theatrical films, benefiting from a more suspenseful premise than most of its siblings and from the unusual scenario of Naruto operating without access to his defining power. The political dimension — cross-village accusations and the diplomatic complexities of Naruto's false arrest — adds a layer of intrigue. Mui himself is given enough backstory to function as more than a generic villain. Non-canonical but solidly constructed, Blood Prison is recommended for fans who have progressed through the Five Kage Summit arc of Shippuden for full political context.