The brothers who were separated in childhood in the drama "Triangle" are not an isolated case in k-drama plots. K-dramas are full of siblings who were separated at birth or during childhood.

The separation of siblings often raises the question of what it means to be a family.

In the case of "Triangle," Lee Bum Soo, Kim Jaejoong and Im Si Wan were sent to an orphanage after their father died and went on to live very different lives. One became a policeman, another a thug, and the third a rich man's son. None of them will be whole until they reunite.

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