Righteous Love

Jang Hee-soo - Hee-tae's sister who was once a ballerina but because of her collapsing and becoming a paralytic, she could only observe around her family, often imagining herself having conversations with her family in her head.

Jang Ki-tae

Jang Min-ho

(cameo)

(cameo)

Jang Hee-tae - A Marine biologist husband of Kim Il-ri who was her professor back in highschool. He first suspected his wife was having an affair by receiving a message from an anonymous number. After confirming the suspicion and throwing a fit, he filed a divorce petition and started living separately. Another problem arise in their family causing the two of them to stay together which made things difficult. But after having his thoughts collected, and realizing that he still loves his wife he decided to get back with Il-ri but this time Il-ri refused telling him how her feelings were hurt when he did not listen and forgave her when she was pleading.

Kim Il-ri - A hard-laborer who only finished high school, Il-ri married her high school sub-professor Jang Hee-tae after they met again after 7 years. However, as soon as they got back from their honeymoon vacation, Hee-tae's sister collapsed which gave her the decision to not have children and treat Hee-soo as her baby as Hee-soo's body is paralyzed. When she accepted a part-time work from her co-worker, she met carpenter Kim, whom she find herself attracted to. The two of them found mutual feelings but is later discovered by her husband causing a crack in their perfect marriage and filed a divorce. But after different trials in their family, she decided to leave carpenter Kim and got back together with Hee-tae.

Kim Joon - Found by his grandfather at his doorstep, Kim Joon grew up following his grandfather's footsteps by becoming a carpenter. He hired someone to be the painter for his new studio and did not expect it to be a girl. At first being cold and grouchy with Il-ri and her chattering, he later fell in love with her even with the knowledge of Il-ri being married.