Well those Natives on the northern islands are suppose to be the remains of the ten lost tribes,
But that may be a little to far back to start, or maybe not.
600 bc
Babylon attacks and carries the ten tribes of Israel off into Captivity, while the two tribes of Judah remain.
500 BC
With Babylon falling the people of Israel attempt to return home, with a Assyrian Army to the West, they flee east to attempt to go around it.
300 BC
After many Adventures and Misfortunes The Remains of the Tribes, still calling themselves the Sons of Israel, find themselves under attack in Korea By a larger army, Fleeing Eastward in Boats, they come to a very sparely inhabited Island.
200 BC
The First Koreans mostly Fishermen start visiting the Islands to the east. there they find a people who worship one god, and practice certain rituals to mark themselves. the Fishermen land and setup small villages Marrying some of the local Girls. As Culture and Religion is passed down thru the Females, the Children are raised as Israelites.
150 BC
The First attempt by Korea to Conquer the Islands is repulsed by the rebuilt Israelite Army. But the Peaceful immigration continues, with the Israelites managing to keep a slight Majority, and Cultural advantage.
100 BC
There had been several small attempted invasions over the last fifty years, but this was a major attempt, and It succeeded in taking several Coastal towns and holding them. Major immigration of Koreans, Not just Fishers and Farmers but All levels of Craftsmen, and others.
75 BC
A Attempt to enlarge the Korean Holding is a Disaster as the Israelites, taking revenge for 25 years earlier not only defeat the Koreans, but take back the Holdings.
The Israelites now find themselves with a large Korean Cultural Community, They can't get rid of. Over the next Fifty Years, more and more of the Oriental Culture is adopted by the Israelites, while they retain their Religion.
25 BC
Merchants from China start Visiting The Islands which they call Nippon, With then they bring their Language, The Books of Genesis and the Torah are written down in this new Language.
1436 AD
Vinco De Gama is astonished when after visiting China, he continues North and discovers a Land that worships Yehovah, and call themselves Israelites. In his Log records the Chinese Name for the island,
Japan
I know this is not what Wendall was after, and my Dates are ASBish,
But it is two in the morning, I was about to turn off the Comp, walk the dog and go to bed, But this just came off the top of my head.
Enjoy it anyway.