The title is pretty self-explanatory...but this is for ALL generations. I'm looking for suggestions! Let's reach 500, shall we?

When a young girl named Choco Kaori "accidentally" finds a Field Spell Card in an unexpected place, she realizes that the card itself held pure oblivion. Yusei and the Five other Signers are first to feel the impact of such a card when used in a Duel. En media rez... Sayer aims to take ownership of that card, and if he did, doom draws near. Prepare for the beginning of the end...

Why would an little girl in an abandoned elementary school look for teddy bears and nothing else? And why would the mysterious man she cared for so much want to get her? The answers lie in the midst of the campus...and no one can hear the giddy laughter and the horrified screams of the child as an old friend seeks to take the child as his own. Rated T for graphic details.