20th Century Nostalgia (1997)

A curious student suspects that an alien entity has traveled back in time, inhabiting his body to explore humanity's flaws and the impending doom facing civilization. Encountering a girl, he believes she hosts the spirit of another extraterrestrial. Together, they embark on a unique mission, armed with video cameras to capture and analyze the intricacies of contemporary urban life in Japan. Their journey melds intrigue with a sense of urgency, as they seek to understand the fate of humanity through the lens of an outsider’s perspective.