The manga adapts the upcoming Hirune Hime: Shiranai Watashi no Monogatari anime film, which will open in Japan on March 18.
Yen Press announced on Monday that it will publish Hana Ichika’s Napping Princess: The Story of the Unknown Me (Hirune Hime: Shiranai Watashi no Monogatari or Ancien and the Magic Tablet) manga simultaneously with Japan.
The New York International Children’s Film Festival (NYICFF) will screen the film on March 19 in Japanese with English subtitles under the title Ancien and the Magic Tablet.
A spinoff anime short will debut in early March on Hulu Japan.