of whispering lights and empty ice rinks (слэш)

One would think that everything would calm down after Yuuri won the Onsen on Ice event. It was supposed to be his year; he was going to be training with his long time idol turned coach and he was back in Japan with his family. Everything was looking up for Katsuki Yuuri.
That is, until a stranger that looks exactly like him, but older appears in the middle of the rink after a bright flash of light.
Oh, right, because time travel is apparently a thing now.
also known as: Yuuri, Yuri and Viktor go back in time to meet....themselves.