Mood: The mood of the video seems to be energetic and vibrant, likely an action-packed dance or music video. The theme could be related to friendship or relationships, given the title 'GF BF' which may stand for 'Girlfriend Boyfriend' or a play on words related to friendships. The overall emotion evoked is excitement and anticipation.

Environment: The setting appears to be a dark or nighttime environment with a starry background, suggesting a nighttime performance or a music video with a dynamic and lively atmosphere. The diagonal lines in the background add a sense of movement and energy.