No, in the accident a "shinigami" manifested and latches itself to kai, so whenever he wrote something and it became a movie, the main protagonist of that story/movie dies, so whenever he wrote something someone dies , like death note hehe.
In the beginning youichi was in the same train as kei when they were kids then the accident happened, but only the two of them survived, youichi has something to do about kei's power
oh i thought it was all just psychological not real shinigami things
Was there supposed to be another child survivor they somehow killed for them to survive??? just what is going on