Mood: The mood of the video appears to be energetic and playful, with a theme of youthful rebellion or casual relationships, as suggested by the title 'SAGAA BOYFRIEND'. The overall emotion exuded is carefree and vibrant, likely targeting a young audience.

Environment: The setting seems to be an urban or modern backdrop, possibly a cityscape at dusk or night, indicated by the neon lights and the color palette. The environment appears trendy and contemporary, fitting for a music video or a light-hearted youth-oriented content.