Katsuki sits cross-legged, clearly in no hurry to go anywhere. “What’s your name? I’m –” “I know who you are,” he cuts him off, then blushes, then hates himself for both those things. Katsuki looks surprised, and Yuri can’t think as to why. He’s a nationally ranked figure skater. He’s Yuri’s favorite figure skater. ~ Yuuri and Yuri become friends and Viktor develops a crush.

In which Yuuri was a Clearer in SAO, and this... Changes things. (Or the one in which Yuuri decides to try gaming on a whim when he's thirteen, manages to get his hands on SAO, and has to live with its impact and fallout for the rest of his life.)