Lyrics are in the captions as always, enjoy~
Lyrics: http://lyrics.wikia.com/wiki/%E5%A6%96%E7%B2%BE%E5%B8%9D%E5%9C%8B_(Y%C5%8Dsei_Teikoku):%E9%9C%8A%E5%96%B0%E3%81%84
Ga-Rei: Zero OST
Yousei Teikoku
曲名(Song name)：霊喰い (Tamakui – Souleater)
https://myanimelist.net/anime/4725/Ga-Rei__Zero