North Korea amended its Constitution to include provisions on territorial sovereignty and the abandonment of unification on March 23, 2026. The purpose of the amendment is to institutionally consolidate Kim Jong Un's monolithic leadership system, and to codify the hostile two-state relationship in the Constitution. The institutional consolidation of Kim Jong Un's monolithic leadership system was realized by stipulating the establishment of the monolithic leadership of the Supreme Leader, and strengthening the authority of the President of the State Affairs Commission. In addition, the hostile two-state relationship was reflected in the Constitution through the introduction of a new territorial provision and the deletion of references to unification. This article analyzes the amendment of the Constitution, its content and characteristics, and their implications and prospects for inter-Korean relations since the beginning of the Kim Jong Un regime...