I designed this island based on the context of the island, and it was safe in the sun, in the sunset, in the night sky or when the cicadas were singing. The relationship between moss, vegetation and sunlight on the island is the leisure experience I wanted to bring to users when designing. I considered the light and shadow experience, using the arrangement of the windows of the hull and the reflection of the highly reflective glass and the water surface to create a sparkling atmosphere; the top layer uses the same hollow form, and the sunlight shines on the green velvet ground to form a light spot, which is a metaphor for the sunlight passing through the forest to form a light spot on the ground; and the windows on both sides of the second floor symbolize moss, which can also form; at the same time, transparent materials are used on the deck to introduce light into the bottom cabin. In terms of material, I use green velvet for embellishment to metaphor moss. On the deck, I designed the sunbathing area in the form of contour lines in the topographic map. The velvet circular sofa with changing slope formed between the two contour lines satisfies the user's free choice from lying to sitting.