Freezing: Zero (フリージング ZERO) is a spin-off of Freezing. The story was written by Lim Dall Young (林達永), drawn by Jeong Soo Cheol (鄭洙哲), produced by Artlim Media, published by Comic Valkyrie, into Japanese. The story explores and expands the backgrounds of several characters and events that take place prior to the main series. The first arc of the series centers around Kazuha Aoi's second year at West Genetics and Yu-Mi Kim and Elize Schmitz's third year at West Genetics as part of the elite Numbers Unit. A prequel of sorts appears in Cross Make 2011 Summer.