Shiki's room in the hospital is 446, although in Japan, where the film was made, hospitals don't have fourth floors because the Japanese words for "death" and "four" are pronounced the same.
Of all the Kara no Kyokai serial novels, this was the movie that has more internal time. The story begins in March 1996 following the incidents in Gekijô ban Kara no kyôkai: Dai ni shô - Satsujin kôsatsu (zen) (2007) and ends in June 1998, when Shiki can finally meet Mikiya. although in Gekijô ban Kara no kyôkai: Dai ni shô - Satsujin kôsatsu (zen) (2007) there is a jump to two years later after the timeline August 1995 - March 1996, this movie shows all the events of Mikiya during Shiki's coma.
Timeline: March 1996- June 1998.