共鳴のTrue Force

"共鳴のTrue Force" is a song performed by Hitomi Harada for the 2014 television anime Seirei Tsukai no Blade Dance (Blade Dance of the Elementalers; 精霊使いの剣舞), where it was used as the first opening theme. TNK animated the series, and Harada released the song in 2014 as her seventh single.

Lantis released the single on July 23, 2014. moyo wrote the lyrics, 増谷賢 composed the music, and 熊谷主毅 arranged it. Alongside "共鳴のTrue Force," the CD included the coupling track "be lovely days" and instrumental versions of both songs, and the release reached No. 55 on the Oricon weekly singles chart.