Two girls of similar age meet unexpectedly because they both suffer from dissociative identity disorder.
Same trapped by a broken personality, same no memory of childhood, fate went round and round, and finally ended up living under the same roof.
They became each other's only support.
Catching each other when the other person switches to a stranger's personality, protecting each other when out of control and confusion, and carefully piecing together their respective lives.
As the dusty past is revealed bit by bit, those childhood shadows that have been deliberately erased, the divided self, and the forgotten truth finally emerge one by one.
And they finally found their complete memories and true selves in each other's company.
Concept: Broken souls can redeem each other