Throughout human history, the concept of “dream sharing” has captivated our imagination. From the multi-person dream scenarios in the movie Inception to real-world scientific attempts to establish communication during sleep, dream-sharing technology is moving from science fiction to reality. Dream sharing refers to the use of advanced technological methods to allow multiple individuals to perceive, communicate, and even participate in each other’s dreams. In 2024, remarkable breakthroughs have been made in this field: researchers have utilized brain-computer interface (BCI) technology,