This was a popular fan-distribution site or uploader known for providing these mobile-friendly versions of popular anime episodes and movies. 📺 Where to Watch Officially
After being framed for the attempted assassination of the Fourth Raikage and the murder of several jōnin, Naruto is stripped of his rank and sent to Hōzuki Castle. Upon arrival, the warden, , uses a special seal called the Fire Release: Heavenly Prison to suppress Naruto's chakra, making escape nearly impossible. While imprisoned, Naruto befriends inmates Ryūzetsu and Maroi while uncovering a dark conspiracy involving the Box of Paradise , a legendary treasure said to grant any wish. Official Viewing Platforms Unlocking the Gates: A Complete Guide to "Animekagero
Naruto Shippuden the Movie: Blood Prison (2011) - Plot - IMDb making escape nearly impossible.
If you find a genuine file, here are the likely specifications: Unlocking the Gates: A Complete Guide to "Animekagero
: Ryūzetsu ultimately sacrifices her life to save Naruto using her Dragon Life Reincarnation technique. Narutopedia