1+6+3 is studying about the characteristic of “Boundary Line”. Boundary line is the representation of law and right. In architecture, it is a line that separates two space in 2D. This project is challenging the concept of boundary line and seeing the possibility of having boundary line in 3D. Therefore, the concept apply in the topography and facade. The project starts to use the frontality peeling away from the building and starting to differentiate the space. It creates a playful inside/ outside space in the project. As for the topography, the ground starts to elevate and sink and giving the privilege to the user and eliminating the public. It gives the project a range of hard and soft boundary line.