Tokai Television has become an expert on the subject of adoption in Japan, and this Sunday it will air the latest installment in its series "NNN Document 16" (Nippon TV, 12:55 a.m.)

The program follows Emiko, a 56-year-old woman who only last year discovered she had been adopted as a baby. She was given this information by a relative, who explained that her parents, now dead, had carried out a special adoption in which Emiko was listed on their family register as their child, with no footnote indicating she was adopted.

Emiko has since embarked on a mission to find her birth mother, which is extremely difficult since it happened so long ago. The only thing she can do is find the paper trail.