[Kamen Rider Decade Fanfic] a Heartbeat That Spans the World

What kind of existence is Kamen Rider? What is the meaning of traveling through various worlds? Different worlds have different stories happening. Connecting everything and destroying everything is the fate of decade. And what happened to Diend? For her, as long as she can move forward with the person she loves most, she has nothing to fear. So, "Take hold of my hand and let me be your strength." The world with you is the end of my journey.