Calm and playful, this Japanese Zen kids’ room centers on pale green tatami surrounding a sunken fabric-lined reading nook. A layered rammed-earth wall brings organic texture, balanced by a floating cedar bench over a band of charcoal gravel. A wood-latticed clerestory floods the room with soft daylight, complemented by a moonlike washi lantern. Cedar cube stools, vivid orange accents, and koinobori streamers complete a serene, tactile setting for quiet play.