Yusei Fudo was your friend, one of your closest friends. Until he turned into a Dark Signer, and lost the mark of the Crimson Dragon, which passed down to you. Yusei was now evil, having the mark of the Spider, and wants to destroy the world. He left all his friends behind, not even saying they were his friends, including you.

You were walking down the empty and broken streets of the Satellite, until you hear an engine. You turn, and see Yusei on his Duel Runner, coming your direction.