So the culprit was taeju's bad haircut that got me thinking the baby is a girl from the spoilers I got from different platform.
Oh well girl or boy it doesn't matter we always Stan and support cute babies...
I need timeskip when they finally meet again after being truly happy with their lives T_T
I was so angry at song-rik at the beginning but the end...poor baby just wanted someone by his side.(though I don't justify what he did at the beginning) but he didn't deserve that....
You see kids that's why childhood trauma is bad , either you hurt yourself or end up hurting others.