However, earlier period Yayoi men excavated from the Sasai site in Fukuoka City and the Karako-Kagi site in the Nara Basin were confirmed as bones of immigrants to ancient Japan.
ただ、福岡市の雀居（ささい）遺跡や奈良盆地の唐古・鍵遺跡の前期弥生人は、渡来系の人骨だと判定されている。