The official website for Shika no Ō: Yuna to Yakusoku no Tabi (The Deer King: The Promised Journey With Yuna), the anime film of Nahoko Uehashi‘s Shika no Ō (The Deer King) medical fantasy novel series, began streaming a trailer and teaser video for the film on Friday. Both videos reveal and preview “One Reason,” the theme song that singer-songwriter milet created for this film. The site also unveiled a new visual by director and character designer Masashi Ando.

The film screened last month in competition at this year’s Annecy International Animation Film Festival.
The film was previously slated to open in Japan on September 18, 2020, but it will now open on September 10 this year. Anime Limited plans to release the film in…