STYX HELIX

"STYX HELIX" is a song by MYTH & ROID that served as the first ending theme for the 2016 television anime Re:Zero kara Hajimeru Isekai Seikatsu, released in English as Re:ZERO -Starting Life in Another World-. The series was animated by White Fox.

MYTH & ROID released the song as their third single on May 25, 2016. Tom-H@ck wrote the lyrics and handled both composition and arrangement, while Mayu performed the vocals. The CD single also included the B-side track "STRAIGHT BET," and the song later appeared on the unit's first album eYe's in 2017.