Kyeong-hee Lee

Cha Sang-doo (Bi) and Chae Eun-hwan (Gong Hyo Jin) grew up as the best of friends. One day, Eun-hwan's family goes bankrupt and debtors rushed to collect their belongings. When her father's old record player was being taken, Sang-doo goes after the guy, accidently killing him. After being released from prison, he finds that his family and Eun-hwan have left him. Years later, he becomes a gigolo (with his uncle) to pay off his sick daughter's hospital bills. He eventually meets his long-lost firs (mydramalist.com)

Cha Moo Hyuk was adopted by an Australian family but was abused and left homeless at an early age. One day he comes across Song Eun Chae, the coordinator for Choi Yune, a famous singer in Korea, whom she is secretly in love with. Her fateful encounter with Moo Hyuk ends up affecting not only her life but that of her precious Yune as well. (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)