The "Live Legend 1997 Su-metal Seitansai" was a standout concert in BABYMETAL's early years, held to celebrate Su-metal's 16th birthday. This event took place in December 2013 and was marked by a series of thematic performances that highlighted Su-metal's transition from girlhood into a more mature phase of her career. The concert featured an array of dramatic stage elements and costumes, including a crucifixion scene that left a lasting impression on fans. The setlist was a blend of their early hits and deeper cuts, all performed with the high energy and theatrical flair that fans had come to expect from BABYMETAL. This concert is often noted for its symbolic representation of rebirth and was a pivotal moment in the band's narrative, emphasizing the fusion of idol culture with heavy metal in a truly unique spectacle.