Japan is often celebrated for its temples, neon-lit cities, and cherry blossoms—but few realize it’s also home to some of the most stunning beaches and tropical islands in Asia. Stretching across thousands of kilometers, Japan’s archipelago reveals turquoise lagoons, coral reefs, and soft white sands that rival the Maldives. For luxury travelers, these islands offer world-class resorts, private villas, and hidden coves where the sea shimmers in fifty shades of blue.