While Ryotaro Sakaguchi's screen credits may still be emerging, his burgeoning career is poised to make him a significant figure for collectors in the coming years, particularly with the highly anticipated release of *Under Ninja* in 2025. Though details are scarce, early buzz surrounding the project and Sakaguchi's involvement is already generating considerable interest, signaling a potential future cult classic for physical media enthusiasts. Savvy collectors are already keeping a close eye on his developing filmography, recognizing the early stages of a career that could yield sought-after and obscure genre titles down the line. As *Under Ninja* approaches, the potential for limited edition Blu-rays, 4K releases, and special collector's editions, especially if it garners a dedicated following, makes Sakaguchi an actor whose work will likely be essential for those curating a comprehensive and forward-looking collection of unique cinema.