NOVEL:LET'S FIND THE ANCIENT MISSING LAND IN JAPAN Vol.13 by Seiji Ninomiya

"Actually Where did Japanese people come? China, Korean Peninsula?"
Sally asked learned people of Japan.
"Yes. From China, Korea, Russia, East-south Asia."
They answered.
"Oh I know. And tell me when they came Japan."
"May be 10,000 years ago."
So old."
Sally said to them.
"Teach me PRE-HISTORY DAYS OF JAPAN."
Sally was exciting.