Mood: The mood of the video appears to be comedic and light-hearted, with the men displaying exaggerated expressions of surprise and confusion. The theme seems to revolve around friendship, camaraderie, and possibly romance, given the title 'Nanu Ki Jaanu'. The overall tone is playful and humorous.

Environment: The setting appears to be an indoor location, possibly a living room or office space, with a beige and blue wall in the background. The atmosphere seems casual and relaxed, with the men dressed in everyday clothing.