Mood: The mood of the video appears to be melancholic and introspective, with a sense of longing. The theme seems to revolve around heartbreak, separation, or a poignant goodbye. The use of the word 'Alvida' (a term often used in South Asian cultures to bid farewell) and 'D-Day' suggests a significant and possibly emotional event.

Environment: The setting of the video is not explicitly clear, but based on the attire of the individuals and the overall aesthetic, it seems to be set in a contemporary or modern environment, possibly in an urban Indian setting. The background is blurred, with a focus on the subjects, suggesting an intimate or personal moment.