A whimsical illustration of a lanky black cat and small white rabbit in dark whimsical art style, sharing a red umbrella in gentle rain, standing among glowing purple lavender and heart-shaped red poppies, digital painting with expressive brushstrokes showing contrasting fur textures, misty twilight background with floating love letter papers, characteristic Tim Burton inspired design with huge round eyes and sweet shy smiles, rose petals swirling in the wind.