They say Yugi's father is away on business, and yet we never see or hear from him. Then after the first season Yugi's mom is never really seen again. Maybe there's a reason and it is just taboo to talk about it.
Christmas was always supposed to be a happy time, but for Yugi it was a cruel reminder of what once was. He begins to hate it, until he is visited by someone special.
I kept it a secret from you because I know you would've felt guilty, but this was my guilt to deal with, there is no reason to drag you down with me, so I never told you. I should've never played that card, no matter what my excuses were, but nevertheless I don't want you to know my real reason for playing that card.
AU What if Kaiba was right all along? What if Yami really was a figment of Yugi's overactive imagination. What if all this magic stuff really wasn't real. Well, he would be partially right anyways.