In 2019, the South Korean and Japanese governments removed each other from their white lists of countries with preferential export controls due to historical issues. Regarding historical reconciliation, while the Japanese administration has moved to the ‘politics of omission‘ with ‘minimum political responsibility,‘ the Korean to the ‘politics of memory,‘ demanding ‘legal responsibility‘. An emergent regional economic community-building order is needed to invest in trust-building, and the rule of law should undergird this process. East Asia concluded the RCEP in 2021. However, its integration has been recognized as having an insufficient legal structure. To establish trust, the issues of historical reconciliation of imperialism and its philosophical foundation must be addressed by both the sovereigns (citizens). Having found common ground between them, the two countries can form a liberal democratic legal community and defend the expansion of dictatorship on the continent.