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My Only One, originally titled "하나뿐인 내편", is a Drama, & Family TV series, which premiered on September 15, 2018, available to stream on KBS2. It consists of season 1, with episodes 106.
A woman’s life gets twisted one day because of her biological father who shows up after 28 years of absence. He had been thoroughly hiding his identity, afraid that he might be an obstacle in his daughter’s life. The father and daughter meet the “only ones” in their lives and put back together the pieces of their broken hearts.