From Fake Dreams Ch 17 by Third Fang is up. F S/N AU between 4th and 5th Wars
http://www.fanfiction.net/s/7207791/17/
Kiri only appears in the beginning chapters before dying due to curse but he certainly changes things around.
"Emiya Kiritsugu was happy living the rest of his short days. He had put his past
behind him... until he began to dream of futures that had yet to be. Let it be
known that the Magus Killer was not dangerous simply because he was dying and
would not fight."
http://www.fanfiction.net/s/7207791/17/
Kiri only appears in the beginning chapters before dying due to curse but he certainly changes things around.
"Emiya Kiritsugu was happy living the rest of his short days. He had put his past
behind him... until he began to dream of futures that had yet to be. Let it be
known that the Magus Killer was not dangerous simply because he was dying and
would not fight."