Miwa Moriya was 6 when social workers told her she was going to a Christmas party but instead moved her into a group home for about 60 children in a small city in western Japan.

The "party" turned into more than eight years of living away from her mother, and the beginning of a long battle with loneliness, bullying and trauma.

She never knew exactly why she was sent to the home — only that the government thought she would be better off there than with her family.