Characters and their back stories(for now, it's in the past)

Everything changes as time pass by. Will I get to be happy again? Will my family be reunited or will it broke to the last peace?
Jisoo finds it difficult to accept changes. Will she manage to leave the past behind her and to change her destiny?
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Sorry I don't really know how to write a resume of the books. You will find out everything if you read it.