 The opening theme is "The Day", performed by Porno Graffitti and the ending theme is "Heroes", performed by Brian the Sun.In March 2016, Funimation announced they had licensed the international rights for streaming services, the home and broadcast release, and the merchandise rights.Universal Pictures UK distributed the first season in the United Kingdom and Ireland on behalf of Funimation, with Sony Pictures UK distributing the second season for Funimation, and Manga Entertainment distributing subsequent seasons for Funimation.