• South Korea
    23 August 2018
    (Seoul International Cartoon and Animation Festival)
  • Japan
    1 September 2018
  • Spain
    12 October 2018
    (Japanese version) (Sitges Film Festival)
  • Australia
    18 October 2018
    (limited)
  • New Zealand
    18 October 2018
    (limited) (Japanese version)
  • USA
    21 October 2018
    (Japanese version) (Animation Is Film Festival)
  • South Korea
    15 November 2018
  • Indonesia
    26 December 2018
  • Singapore
    3 January 2019
  • China
    18 January 2019
  • Spain
    19 January 2019
    (FAN Anime Festival) (premiere)
  • Italy
    21 January 2019
  • Vietnam
    25 January 2019
  • Germany
    26 January 2019
    (Akiba Pass Festival)
  • Canada
    7 February 2019
    (limited) (Japanese version)
  • USA
    7 February 2019
    (limited) (Japanese version)
  • Canada
    10 February 2019
    (limited) (English version)
  • USA
    10 February 2019
    (limited) (English version)
  • Ireland
    11 April 2019
  • Spain
    12 April 2019
  • Mexico
    31 May 2019
  • Colombia
    29 June 2019
  • Peru
    29 June 2019
    (limited)
  • France
    3 July 2019
    (Montpellier) (premiere)
  • Taiwan
    10 January 2020
  • France
    27 May 2020
    (DVD and Blu-ray premiere)