I noticed your post on the Naruto thread about a self-insert into a canonical character shortly after that character's death. While not a self-insert or a Naruto fic, Sean Bean Saves Westeros did this. The premise is that after Season 1 of Game of Thrones finishes filming, Ned's actor wakes up as Ned in the books' continuity right after Ned has been executed. Fortunately for Sean, he was current with the books.