Amidst the introduction of technologies such as agile and models to quickly respond to DX and business transformation, Scrum was introduced, but the release was gradually delayed after repeated sprints. The model collapses due to repeated change requests for newly designed software using model technology. In response to issues related to changes such as these, we will discuss the importance of derivative development technologies that make it easier to grasp the relationship of ""change requests - change specifications - design"" and support changes as a behind the scenes.