She is a fatherless daughter.
He is a motherless son.
The union of two broken families brings their parallel lives together. Everything was a mistake from the beginning.
He hates her, hates her for ruining his family, he loves her, loves her quiet and gentle appearance; she hates him, hates him for not treating her as his sister, hates him for leaving the world after making a promise to her.
Reunited five years later, can everything start again...