Mood: The mood of the video appears to be romantic and emotional, with a hint of longing. The title 'Tera Kasoor' suggests a theme of love, regret, or possibly heartbreak. The overall tone seems to be melancholic yet intimate, indicating a deep emotional connection between the characters.

Environment: The setting seems to be a coastal or beachside location, possibly during sunset or sunrise, given the warm orange and pink hues in the background. The city skyline is faintly visible, suggesting an urban or metropolitan setting near the coast. The environment is serene yet vibrant, reflecting the emotional turmoil and love depicted in the video.