Mood: The mood of the video appears to be nostalgic and sentimental, with a hint of youthful romance. The theme seems to revolve around college life, love, and possibly heartbreak. The overall emotion evoked is bittersweet, suggesting a reflective and emotive tone.

Environment: The setting appears to be a college campus, with a bulletin board, trees, and a building in the background. The atmosphere seems casual and relaxed, with students going about their daily activities. The presence of a bulletin board with posters suggests a lively and vibrant campus life.