'ITU Store' is a project that is developed in corporation with assistants to rector. While the range of products is ever-changing, it struggles to put a certain requirement list. Exhibition and storage areas are thought as a whole and flexibility is taken as a design criterion of the project synchronized with its functionality. Due to using rails on the exhibition walls, it allows flexibly position changing on hanging system as needed. The cube modules in the ground can easily be separate from its place and can be carried in another position to change the parameters like circulation, size and height of storage and exhibition parts. Thus, the modular system can easily adapt to its environment.