In 2013, Mrs.Vinci was formed, later going by Srv.Vinci. Their first song was "ABUKU(泡)" released under the creative label Perimetron. In 2017, they renamed themselves to King Gnu. They then performed at the
Fuji Rock Festival in 2017 and 2018. On October 25, 2017, the band released their first album under the name King Gnu,
Tokyo Rendez-Vous. The track "Vinyl" was used in a Persol Tempstaff advertisement released on January 25 the next year. In January 2019, the band released
Sympa, their first release under a major label after signing to
Ariola Japan. The following month, King Gnu released hit song "
Hakujitsu", which ranked No.4 in the year-end chart of
Billboard Japan Hot 100. In October, they released "Kasa" and achieved their first No.1 on the
Billboard Japan Download Chart. On December 31, King Gnu performed "Hakujitsu" at the
70th NHK Kōhaku Uta Gassen, their debut performance on the program. Their third album
Ceremony, released on January 15, 2020, was a commercial success, peaking atop the Japanese
Oricon albums chart, the
Billboard Japan albums chart, and was one of the 10 best-selling albums of 2020 worldwide by selling over one million copies. A nationwide tour for the album was scheduled but all performances were postponed due to the
COVID-19 pandemic. The band held their first online live concert in August. On September 8, it was announced that King Gnu would be the first Japanese artist to sign a partnership agreement with
Red Bull. In August 2021, it was announced that King Gnu would perform the opening theme song "Boy" for the anime adaptation of
Ranking of Kings; the song was released in October. In December,
MAPPA released a few movie trailers promoting the
Jujutsu Kaisen 0 anime film adaptation, which King Gnu have made 2 new songs for the film. The songs are and , which are the opening and ending themes for the
Jujutsu Kaisen movie. The two songs were released together as
Ichizu/Sakayume. In March 2022, they released , which is the theme for Japanese television drama ''
Don't Call It Mystery'', adapted from the manga of the same name. In November 2022, they played one of the biggest concerts of their career, performed in two days concerts with attended more than 100,000 fans at
Tokyo Dome. King Gnu held their biggest tour ever in Japan "Closing Ceremony" on May and June 2023, which saw them play at stadiums five years after their debut for the first time in
Nagai Stadium and
Yokohama Nissan Stadium. They released "
Specialz" as the opening theme for the Shibuya Incident Arc, the second part of the
second season of the
Jujutsu Kaisen anime on September 1. In March 2025, it was announced that King Gnu would perform the ending theme for
Detective Conan: One-eyed Flashback, "Twilight!!!". In September 2025, King Gnu released the song "So Bad", created as the exclusive official theme for
Universal Studios Japan’s Zombie de Dance:
Halloween Horror Nights event. On January 9, 2026, King Gnu released their single "Aizo", to serve as the opening theme for ''
Jujutsu Kaisen's'' Culling Game Arc. == Discography ==