Provided to YouTube by Aniplex Inc. Harmony of One's Heart · Diva (Vo.Kairi Yagi) Harmony of One's Heart ℗ 2021 Aniplex Inc. Released on: 2021-05-26 Lyricist: Natsumi Tadano Composer: Satoru Kousaki Arranger: Sho Ishihama Auto-generated by YouTube.