The clip introduces the film’s theme song “Hoshi no Fune” (Star Ship) composed by Shinji Orito and performed by Lia.
The two are best known for their previous collaboration song “Tori no Uta,” the theme song for Key’s AIR adult Pc game and its TV anime adaptation.
The five-episode web series “Chiisana Hishi no Yume” that has been streamed since July 7 is based on the main story of the game, and the feature film tells an after story “Hoshi no Hito” fucusing on Kuzuya voice by Daisuke Ono.