Mood: The mood of the video appears to be romantic and melancholic. The closeness of the couple and their facial expressions suggest a deep emotional connection, while the dark background and the title 'Kyun Na Mere' imply a sense of longing or yearning. The overall theme seems to be a heartfelt expression of love or separation.

Environment: The setting appears to be a dimly lit indoor space with a dark background, possibly a room or a studio. The focus is on the couple, and the simplicity of the background emphasizes their emotional connection.