This project seeks to redefine our understanding of Japanese history by synthesizing cutting-edge paleogenomic data with the classical narratives of the Kiki (Kojiki and Nihon Shoki). At the heart of this initiative is the exploration of Haplogroup D-CTS8093 (D1a2a1a2b1a1a)—the genetic signature of the Japanese Imperial lineage—which has been rooted in the archipelago for 40,000 years. The findings curated through this project suggest a profound shift in the historical paradigm: the D-lineage was not a passive subject of migration, but a proactive sovereign power that secured its authority by monopolizing iron resources and establishing strategic outposts in the southern Korean Peninsula. By identifying the D-monarch and O-vassal stratification in sites such as the Daeseong-dong tumuli, this project elucidates how the indigenous lineage integrated foreign technologies while maintaining its sovereign core. Ultimately, through these multifaceted analyses, we believe it has been possible to demonstrate that the concept of "Bansei Ikkei" (the unbroken line) is more than a myth; it is an empirically verifiable biological reality. By moving beyond outdated models like the "Horse-rider Invasion Theory," we believe we have successfully presented a new vision of Japanese identity—one where the "quality of governance" and genetic persistence intersect to form the world's longest-lasting monarchy.