Mood: The mood of the video appears to be light-hearted and playful, with a hint of romance. The theme seems to revolve around relationships, friendship, and possibly love, given the title which translates to 'Sonu and Titu's Sweety'. The overall emotion evoked is upbeat and cheerful.

Environment: The environment or setting of the video cannot be precisely determined, but based on the title and the style, it seems to be set in a contemporary or modern setting, possibly in an urban or college backdrop, which is common for such themes in Indian cinema.