Mood: The mood of the video appears to be romantic and youthful, with a sense of nostalgia. The theme seems to revolve around love, relationships, and possibly self-discovery. The use of vibrant colors and varied expressions of the individuals in the collage suggests a dynamic and emotional journey.

Environment: The setting of the video seems to be urban, with a glimpse of a cityscape or a train/bus window in the background of one of the frames. The overall aesthetic suggests a contemporary, possibly metropolitan, environment. The presence of a hat and casual clothing on the individuals implies a casual, relaxed atmosphere.