Deep Love.

Seo-in, who has cancer, says goodbye to Su-yeon, but when she learns, Su-yeon declares that she will never be separated. But Seo-in, who has cancer, is getting colder and colder for Su-yeon, no matter what. Seo-in, who doesn't sleep because she wants to leave her alone, deliberately has sex with a woman who sells herself, and Su-yeon makes her witness the situation. In addition, Min-gyu and Min-gyu, who take care of her drunk and staggering, are invited to Min-gyu.