Kamen Rider Ryuki: S1 E35 - Enter Tiger Kamen Rider Ryuki

In order to become the final Rider to save Eri who only has a few days left to live, Ren charges into battle with little regard for how his behavior appears. To save such a desperate Ren, the only thing to do is stop the very Rider War itself. As Shinji searches for how to do so, the new Masked Rider Tiger appears before him.