Taekwoon spends his Christmas alone, okay maybe not entirely alone. 

Ken misses Leo too much for his heart to bear the pain.  If you have watched the error mv, you'll know the story ;)

"I hate daylight." "Why?" "Cos it's after dark, I won't be able to see you after dark."

Hakyeon was the first person that caused Taekwoon to open up to people. But he became silent again.