Mood: The mood of the video seems to be youthful, rebellious, and carefree. The theme appears to revolve around friendship, youthful energy, and possibly a touch of mischief or defiance, set against the backdrop of a school environment. The overall emotion exuded is one of relaxed coolness and confidence.

Environment: The setting of the video appears to be a classroom or school environment, indicated by the presence of a chalkboard with the phrase 'MAIN WAH! HOON' written on it, wooden desks, and students in school uniforms in the background. The setting seems to blend a casual, modern vibe with a traditional educational atmosphere.