ZERO PER ZERO is a graphic design studio created by Kim Jihwan and Jin Sol, who both graduated from Hongik University with degrees in Visual Design. The studio is working on a project focused on cities around the world and another project focused on capturing and expressing the daily lives of people, and these two projects are mixed to create a new style of graphic designs. The studio has been experimenting with and challenging various works to let other people know how graphic design can be fun, impresses people, and makes them happy. Current projects of ZERO PER ZERO include the "City Railway System" series led by Kim Jihwan and featuring illustrations done by Jin Sol.