'Tapered stool' is designed by replacing the local design languages of 'Tongyeong' in Korea with formative concepts. It embodies the line of mountain ranges that make up the Local coast and the climate of local people who have adapted to the topography without going against the topography like oysters that live attached to rocks. This project sought to solve the local problem of out-of-balance with nature. It informs about the sustainability of pursuing harmony with nature by using oyster shells from the local environment as a material. Also, It silently expresses the warmth of handmade and the wild beauty of oyster as it is.