Kling 1.6 (standard)
Animate this interior scene realistically. Keep the same colors, lighting, and atmosphere. Do not change the camera angle. The camera should slightly move forward to create a sense of depth. Outside the large windows, show heavy rain falling and moving naturally, with raindrops streaking on the glass. Optionally, add subtle lightning flashes in the distance, but keep it realistic and not too frequent. Maintain the calm, moody tone of the scene without overexposing the light.