Mood: The mood of the video appears to be romantic and melancholic, with a sense of longing. The title 'Sun Sada' suggests a nostalgic or yearning tone, which is reinforced by the introspective expressions on the faces of the two individuals. The overall theme seems to be a sentimental and emotional exploration of love or heartache.

Environment: The setting of the video is not explicitly clear, but based on the blurry background and the presence of a wall or pillar on the right side of the image, it may be an outdoor or indoor location with a natural or urban backdrop. The focus, however, is on the emotional connection between the two individuals rather than the physical environment.