This project involves the renovation of an existing house built on a steep valley slope. The RC structure, once seemingly severed from its natural surroundings, is reconnected to the forested landscape by wrapping a balcony around its second floor, with planter baskets cantilevered at its edge. This deliberately designed “floating garden” was developed through careful consideration of structural load, ventilation, and water retention, functioning as a mediating interface between architecture and vegetation. Meanwhile, the water that drips from it carries soil to the ground below, gradually altering the vegetation and renewing the expression of the hillside. The garden is thus redefined not as a decorative element, but as a dynamic apparatus that mediates between building and environment.