The two got married and had Minchae.
After Baek Yi-jin died, Na-hee also remarried Mr. Kim and is now Kim Min-chae.
Minchae is now learning about her biological father.
Shin Jae-kyung’s narrative is being inherited by Hee-do, so Jae-kyung has also solved the narrative today.
Middle-aged Nahee also lives as if she has depression, and that's why.