GK's full name is "garage toolbox", also known as the model of garage manufacturing. As can be seen from the name, the popularity of this model is definitely not as extensive as that of plastic models. The advantages and disadvantages of GK model are just the opposite to those of plastic model, which is almost impossible to mass produce. It usually uses expensive resin materials or soft materials. Resin material can well show the details and precision of modeling, and the unique delicate texture of resin can show the feeling of skin, so many sophisticated robots and beautiful girls can only perfectly show their inherent feelings in the form of resin GK. For example, the gorgeous robots in The Tale of Five Stars and the elegant images of many goddesses in My Love God can only be shown by GK. In recent years, with the popularization of model technology, GK, a previously seemingly unattainable gameplay, has gradually been welcomed by high-level players and players who are not satisfied with plastic models. Private works of major manufacturers and many players will be published at large-scale modeling conferences in Japan.