With Kamen Rider Saber having as many Riders as it does it was perhaps a bit of a surprise when V-Cinext movie Trio of Deep Sin decided to focus on the core three Riders, but nevertheless it remains a series rife with Toei Tokusatsu Fan Club spin-off potential. As two of the last Riders to join Saber's line-up of legendary swordsmen, Reika and Ryoga Shindai are two characters that particularly felt like they had more to give. Toei obviously felt so too, given the surprise announcement of Kamen Rider Saber Spin-off: Kamen Rider Sabela & Kamen Rider Durendal as the latest entry on their streaming platform. This special marks the second time the Shindai siblings have broken away from the main Saber cast, having previously represented them in the Kikai Sentai Zenkaiger portion of the Saber/Zenkaiger crossover episodes.