Kang Boo-ja

Kyung Min, a law student, is in desperate straits, so he decides to take it upon himself to help Hye Ryun's poor friend, Jung Eun. This is the beginning of an extremely volatile friendship that somehow ends with the two of them living together under one roof, or to be more specific, living in a room on top of the roof of an old building. Kyung Min's bratty ways clashes with Jung Eun's simple living, as he steadily takes advantage of her kindness and good nature. (mydramalist.com)

Dr. Min Ki Seo went to Blue Island to fulfill his deceased girlfriend's last wish to find the single mother and her little girl who was infected by HIV and to apologize to them on her behalf as she had unknowingly given the girl tainted blood when she was being treated at the hospital. Lee Young Shin, the single mom, was having a hard time caring for her grandfather who has Alzeimer's and keeping her daughter's HIV condition a secret while teaching her how to live with it. (imdb)