If you are wondering how is this drama. I made a short video of full drama. The duration of the video is just 4 minutes where you know the basic story of drama.

[Copy this link and click on open] https://youtu.be/lbUZHGTSb6s

Orphan Ah Young is a financially struggling 23-year-old who takes care of her 8-year-old sister Dan Bi while juggling part-time jobs. One day a 28-year-old man Yoo Sang appears in front of Ah Young offering to be her dad through a signed agreement.

(Source: MyDramaList)

~~ Adapted from the web novel "Legally, Dad" (서류상 아빠) written by Addis (애디스) and illustrated by Byul (별).