Yugi as a Shape shifter.
Yami & Atem come from the puzzle.
When Yugi wins the final battle, he is very upset cause he knows that means that Yami & Atem have to leave him, to go to the afterlife where they belong but before they step through the door (or is it a gate) they hear a thump and several panicked voices of his friends. They turn around to see that Yugi has fallen unconscious. Not knowing weather they are aloud to go back to their Hikari.
That is when the Gods give them a choice weather to go to the afterlife and join their friends and family or stay here with Yugi + friends.
Yugi wakes up some days later with Yami + Atem curled up on either side of him. He also notices that his Shape shifting ability has woken up, so he has a few appendages that he never wanted anyone to see.
Afraid of being being rejected he runs away.
next Idea:
Pairing: starts out as Yugi/Heba and Atem/Yami eventually turns into Yugi/Heba/Atem/Yami.
Takes place in Ancient egypt. Heba is a slave in the castle. Yami and Atem are already lovers. Atem is the Pharoh. Yugi is a slave that is brought in front of Atem and others for him to chose from. Heba knew him for five years before he was taken away from his long time love.
Anzu bashing.
Well I hope you guys will use some of these ideas. Just thought I'd give them to ya to do what ever you like with them..