After finding out that the man from Room 403 is his Father, Gyeore tried to hide it from Yeonjoo and solve it on his own.
Yeonjoo noticed that something is strange but when she asked Gyeore, he said it's nothing.
Yeonjoo continued to check on Gyeore and tried to cheer him up.
She even said that she's on her way to grab a meal as she's hungry but Gyeore was too busy to join her.
At the cafeteria, Yeonjoo saw Dr. Yang eating on his own. Dr. Yang was about to say something to Yeonjoo but he was interrupted when one of the nurse called for an emergency. (At this point, Dr. Yang already knows that the man from Room 403 is awake as he saw him earlier. The man threatened him that he will hurt Yeonjoo if he tells her about him.)
As for the emergency, it was the grandmother of these two kids.
The grandmother has passed away, and here, Yeonjoo and Gyeore were among the few who attended her funeral.
Back at the hospital, Yeonjoo went to check on Room 403. She was surprised to see that the patient wasn't there.
But she was even more surprised when she went out and saw him talking with Gyeore.
Yeonjoo also had a brief encounter with the man, and here, he told her to breath as someone may think that he is about to do something bad to her.
Yeonjoo then went to Gyeore, and here, he finally told Yeonjoo the truth. That he found out that the man in Room 403 is his Father.
This episode ended with Gyeore rushing to the restaurant of the couple who claimed to be the relatives of the kids earlier. He thought that they are hurting the kids so he immediately went there to confront them.