The mid- to long-term future of peace and shared prosperity on the Korean Peninsula fundamentally depends on the question of whether it is possible to establish a new unit for a unified Korean Peninsula that transcends the multilayered rifts and division between the two Koreas. The report defined “collective governance,” which facilitates sustainable peacebuilding on a unified Korean Peninsula, as a concept that embraces the realization of collective institutionalization, as well as the civil society as a “community of people.” The report proposed a differentiated methodology for integration that emerged from the long-term and gradual integration process of the European Union while presenting the collective governance of the Korean Peninsula as a mid- to long-term future strategy.