KIM Eungsu's work is very abstract and direct at the same time. There is no specific nor indirect syntax. In Theater of the Sea, the sea directly refers to the cyber world, but the experience goes to the realm of abstraction. This time the sea, an infinitely open space, continues to move, but it feels infinitely closed because it is trapped within the frame of the film. However, the two opposite characteristics of open and closed are also characteristic of KIM Eungsu’s work in general. He firmly closes his world, but looks outward from within and takes a step, builds his own castle in the place where he has stepped into, and takes another step outside—such is arbitrary, becoming the driving force for him to complete his work and communicate independently. The audience should also approach and see whether the encounter with the cyber world that has been approached at will and the questioning of the memory reached from it become a reflection unique to his work.​