Strike the Blood: Kingdom of the Valkyria

Strike the Blood: Kingdom of the Valkyria was released in 2015 as a two-part original video animation series, serving as a direct continuation of the light novel adaptation produced by Silver Link. The series adapts the ninth volume of Gakuto Mikumo's light novel series, maintaining the high-fantasy and supernatural action elements that defined the source material. It was produced during a period of high demand for the franchise's expanded narrative arcs, which often required the OVA format to cover dense plot points that did not fit into a standard television broadcast schedule.

The character designs were overseen by Keiichi Sano, who aimed to preserve the distinct aesthetic established in the earlier television seasons while adapting the visuals for the home video medium. Silver Link utilized the OVA format to refine the animation quality for key action sequences, focusing on the dynamic movement of the series' signature familiars. Upon its release, the project was well-received by the existing fanbase, as it successfully captured the tone and interpersonal dynamics that fans had come to expect from the franchise's established visual style.