So-jin, a daughter-in-law, takes care of her father-in-law, Joon-ha, more than her husband, Do-joon. Mi-yeon, who was curious about why So-jin took care of Joon-ha more, started digging in his back.
![Last Sister Class [Uncut]](https://cdnupload.com/wp-content/uploads/2023/08/Last-Sister-Class-2020a.jpg)
