Mood: The mood of the video appears to be romantic and melancholic, with a sense of longing. The theme seems to revolve around a person's regret or realization of their feelings towards someone they care about. The overall emotion conveyed is one of yearning and introspection.

Environment: The setting seems to be outdoors, likely in a natural or park-like environment, given the blurred greenery in the background. The lighting suggests a daytime setting with sunlight filtering through, creating a warm and intimate atmosphere.