With the development of mixed reality technology, the convergence of virtual and real experiences has emerged as a trend in the interactive narratives. In this paper, we introduce “Crossing Narrative”, an interactive narrative experience that seamlessly blends virtuality and reality by utilizing real-world views and bystanders. We discuss specific methods for designing cross-reality narrative experience, focusing on three key aspects of cross-reality interactions: diegetic objects, transition effects, and bystander’s avatar. Our design methods aim to enhance audience social interactions and understanding of the immersive narrative.