I think its chunsam and mingyum's baby
Chunsam dream. There is a meaning for that dream that asians believe but i forgot the meaning. The same with losing a teeth means something terrible will happen and the harvesting giant potato means you will have a child.
After short research ive remember the meaning of dreams. Falling of teeth means someone died. Sweet potato means baby boy. And baby in dreams means dreamer wants to have baby. Thats why when he wake up he said that they must make baby
Chunsam and Mingyum are in serious case of cinnamon rolls!
Who is the baby at the last picture though?