Super Kamen Rider Den-O Trilogy - Episode Red: Zero's Star Twinkle.

With the older Sakurai having sacrificed himself to ensure Airi’s future, Yuuto struggles with his own role in their story. Despite being told that he is no longer bound to his future, Yuuto finds himself continually drawn to Airi, and when another man contracts with an Imagin to woo her, Ryotaro and the Imgain are pulled into the situation, all while the DenLiner runs out of control through time!