JO1's new song "Prologue" will be used as the ending theme for the anime 'BORUTO -NARUTO NEXT GENERATIONS-' that's currently airing on TV Tokyo. 

"Prologue" is a semi-ballad that compares JO1 to the friendships and challenges that are portrayed in the anime. It will be used as the ending theme beginning its October 10th broadcast. 

On JO1's first anime tie-up, leader Yonashiro Sho commented, "Never did I dream that our song will be used as the ending theme for that popular anime. Thank you very much for giving us this wonderful opportunity. All of us are delighted!" 

"Prologue" will be released on various music distribution services on October 11.