When did My Only One Season 1 Episode 21 air?
My Only One Season 1 Episode 21 aired on October 20, 2018.


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.
Do-ran considers an unusual request from Eun-yeong. In an attempt to quash his feelings for Do-ran, Dae-ryuk tries dating another woman.
Direct answers for episode-level questions and details.
My Only One Season 1 Episode 21 aired on October 20, 2018.
This episode runs for approximately 70 minutes.
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