Two souls -toward the truth-

"Two souls -toward the truth-" is a song by fripSide used as the opening theme for the 2015 TV anime Owari no Seraph: Nagoya Kessen-hen, part of Owari no Seraph (Seraph of the End / 終わりのセラフ), which was animated by Wit Studio. The song was released on December 2, 2015 as fripSide's 11th single.

Satoshi Yaginuma wrote and composed the song, and the lyrics were credited to Yoshino Nanjo and Satoshi Yaginuma. The single reached No. 10 on Oricon's weekly singles chart, and the song was later included on fripSide's studio album crossroads.