Mood: The mood of the image appears to be romantic and nostalgic, evoking a sense of longing and love. The theme seems to revolve around a past relationship or a lost love, given the title 'Kaise Hua' which translates to 'How did it happen' or 'What happened'. The overall emotion conveyed is melancholic and introspective.

Environment: The environment or setting of the video appears to be outdoors, possibly during the daytime with a soft, natural light. The background is blurred with a bokeh effect, suggesting a serene and peaceful atmosphere. The exact setting is not clearly defined, but it seems to be a casual, everyday location.