「SasuNaru Doujinshi」 - The Old Man Who Made The Dead Trees Blossom

Feeling the need to snuggle somebody, Kakashi has decided to transform himself into a dog so that Iruka and Naruto would accept him and have some fun with him since sasuke, being an ice prince that he already is, won't bother to spend some good time with him and it all ended up wth all of them being awe struck at the cherry blossoms that floated in the air.