Shigin singer, Kenshibu dancer and classical pianist Yuko Suzuhana, after having been elected "Miss Nico Nama" at the 2011 Niconico Douga Music Festival, officially formed the folk-acoustic band Hanafugetsu (flower-wind-moon) in February 2012 alongside shakuhachi player Daisuke Kaminaga and koto player Kiyoshi Ibukuro, to play at the same festival the following year.

[citation needed] In August 2012 the members of Hanafugetsu met guitarist Shin "Machiya" Oumura, who was a notable session musician with a reputation for fast playing.

[7][5] Previous to Hanafugetsu, Ibukuro and Kaminaga were in a folk punk, visual kei band called Crow X Class with wadaiko player Kurona, who happened to be friends with Wasabi too.

[10] Bassist Asa, a popular Vocaloid producer and creator of the hit song "Yoshiwara Lament", then officially joined the band in 2013.

[13][10] [14] A video for the first song recorded by all eight current members of Wagakki Band, "Six Trillion Years and Overnight Story" (六兆年と一夜物語), was released in April 2013.

[18] Wagakki Band covered Vocaloid songs for their first full-length album, Vocalo Zanmai (ボカロ三昧), which was released in April 2014.

[citation needed]` The band held their first overseas performance at Japan Expo 2014 in Paris, France in July, in front of 4,000 attendees.

[13][21] The music video for Wagakki Band's first original song, "Hanabi" (華火, Fireworks/Flower fire/A flower's burning passion), written by Suzuhana, was released in July 2014.

[13] Also in 2015, Wagakki Band headlined a sold-out concert at Club Nokia in Los Angeles in conjunction with Anime Expo, with the software persona Vocaloid IA as the opening act.

[29] On February 16, 2020, the band performed their two-day Premium Symphonic Night concert at Osaka-jō Hall, featuring a full orchestra and a special guest appearance by Evanescence lead vocalist Amy Lee.

[36] Still hospitalized in isolation due to COVID-19 restrictions, Suzuhana gave birth to a baby girl on November 24, the day before the tour ended.