Mood: The mood of the video appears to be romantic and upbeat, with a sense of youthful energy. The theme seems to revolve around love or a connection between two people, as hinted by the title 'Ek Vaari Aa' which translates to 'Come Once' in English. The overall emotion exuded is one of excitement and possibly longing.

Environment: The setting of the video seems to be an urban environment, possibly a city street or a market area, given the blurred background that suggests movement and activity. The presence of people in the background and the bright lighting indicates a daytime setting.