National kendo champion Kanzaki Kento is drawn into a fantastical conflict after witnessing a Kamen Rider battling monsters. A born sword prodigy, he goes from doubting the power of fantasy to resonating with a lost holy sword. Granted the Blank Book and the Shadowflow Sword, he transforms into Kamen Rider Shadowflow. By blending pure swordsmanship with fantastical power, he uncovers his family’s secrets and ultimately joins his companions to protect the balance between the two worlds.
