Mood: The mood of the video appears to be stylish and modern, with a sense of confidence and swagger. The theme seems to revolve around self-reflection or duality, as hinted by the title 'MIRROR'. The overall emotion conveyed is one of sophistication and coolness.

Environment: The setting of the video seems to be an urban or cityscape environment, possibly with a high-rise building or a rooftop location, given the background view of the city and the presence of a telescope or binoculars to the right of the man. The bright blue sky with clouds adds to the urban yet serene atmosphere.