According to the dictionary, Theory is defined as an idea used to account for a situation or justify a course of action.
This is what the section is trying to achieve: to explain the details you might have missed out while watching the show.
You might think those little things you see here and there are not that important but in the greater scheme of the show, it is!
Read on and enjoy the fun easter eggs that have been buried all over!
Please note that some theories have been translated and modified from DC Gall Korea, and we have credited accordingly.
NOTE: THIS SECTION IS FULL OF SPOILERS. PLEASE ONLY READ IF YOU HAVE FINISHED THE SERIES.