a chinese couple took watanabe in and later adopted him. he says they raised him as if he was their own child. they helped me when i had nowhere to go. they took very good care of me. i remember everything. >> japan and china restored diplomatic relations in 1972. cat n watanabe could have returned to his home country, but he couldn't leave his foster mother who had been disabled by a stroke and he decided to remain in china. now he's back where it all started. he's heading where he and his family suffered such hardship. the fields are filled with corn. long hills can be seen in the distance. it looks just like it did 70 years ago. a path lands through the field. it's the same path watanabe took to school every day. >> translator: it's been 70 years. it brings back memories of my childhood. i walked on this path when i was young. it's changed a bit. >> but the old houses are gone and so are the japanese families who lived in them. these days there are only chinese people in this area. >> translator: we japanese should not have come here, bu