I honestly don't remember where the kid come from. Heck, I don't even know what her relationship is with the couples…
The kid is Cha Eun-chan. He was adopted by Eun-dong's father Cha Man-jong, and was an infant when Cha Man-jong was thrown(?) off the hospital roof by a cohort of Choi Joon-hyuk.
A few details about characters -- The couple living with Eun-dong and Eun-chan are Kong Young-sim and Bong Seok-goo. I believe Kong Young-sim raised Eun-chan while Eun-dong was in prison. When Eun-dong was released from prison Young-sim and Seok-goo were married and living in Eun-dong's home with Eun-chan.
Choi Joon-hyuk's little sister (sporting a new face -- extensive plastic surgery) just returned to the Choi home. Her name is Choi Joon-kyeong. She was a high-school classmate of Eun-dong's who, with her teen cronies, persecuted and beat up Eun-dong in high school. I anticipate a lot of antagonism from Joon-kyeong once she sees the concern and interest Han Ji-hoon has for Eun-dong (that is, once Joon-kyeong recognizes Eun-dong as her former classmate) because Joon-kyeong seems infatuated with and has spent a lot of time trying to meet up with Han Ji-hoon (who would be her cousin by marriage not a biological cousin). Boy! What a tangled mess, lol.
Gonna make a wild prediction but what are the chances that the kid in Eun Dong's house is actually Tae In and…
@StellarFlower It's been revealed that Hye-won had an abortion (unless she was off somewhere and had the baby). Also, her ob/gyn said she was infertile due to damage to her uterus. However, the scenario is feasible in this type of makjang drama.
I clapped so hard for Gyu Jin during that moment. LSY's acting was excellent at conveying the pent up frustration…
Let's hope the two maintain their resolve. And hope our mothers and siblings will see the changes that need to be made and the healing they need in their lives. All the Song kids were kicked out too. Wouldn't it be fun if they all moved into their own place? Gyu-jin will have to reckon with his OCD tendancies and learn to live with his little brother.
1 
1 
https://www.viki.com/tv/36408c-unrequited-love
Yes, the drama airs one episode a week on Sunday.
A few details about characters --
The couple living with Eun-dong and Eun-chan are Kong Young-sim and Bong Seok-goo.
I believe Kong Young-sim raised Eun-chan while Eun-dong was in prison. When Eun-dong was released from prison Young-sim and Seok-goo were married and living in Eun-dong's home with Eun-chan.
Choi Joon-hyuk's little sister (sporting a new face -- extensive plastic surgery) just returned to the Choi home. Her name is Choi Joon-kyeong. She was a high-school classmate of Eun-dong's who, with her teen cronies, persecuted and beat up Eun-dong in high school. I anticipate a lot of antagonism from Joon-kyeong once she sees the concern and interest Han Ji-hoon has for Eun-dong (that is, once Joon-kyeong recognizes Eun-dong as her former classmate) because Joon-kyeong seems infatuated with and has spent a lot of time trying to meet up with Han Ji-hoon (who would be her cousin by marriage not a biological cousin).
Boy! What a tangled mess, lol.
It's been revealed that Hye-won had an abortion (unless she was off somewhere and had the baby). Also, her ob/gyn said she was infertile due to damage to her uterus. However, the scenario is feasible in this type of makjang drama.
Soompi - https://www.soompi.com/article/1400640wpp/yeo-jin-goo-confirmed-to-be-in-talks-to-lead-new-jtbc-drama
https://youtu.be/8dQK_fU60Ew
https://youtu.be/8dQK_fU60Ew
https://www.viki.com/movies/37177c-be-with-you
https://www.viki.com/movies/37168c-mal-mo-e-the-secret-mission
https://www.viki.com/movies/37172c-the-throne
https://www.viki.com/movies/37149c-midnight-runners
All the Song kids were kicked out too. Wouldn't it be fun if they all moved into their own place?
Gyu-jin will have to reckon with his OCD tendancies and learn to live with his little brother.