The official music video for B: The Beginning's ending theme song The Perfect World, performed by Marty Friedman and featuring Jean-Ken Johnny and KenKen. The music video was released on the music producer Avex's official YouTube channel, and it promotes the anime's image album soundtrack which went on sale on March 7, 2018—five days after the anime was released.
2018年 季度排名 #1
2018年 動畫總排名 #31
