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.

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

Their first independent concert, Vocalo Zanmai Dai Ensōkai (ボカロ三昧大演奏会), was held later in July at Shibuya's Music Exchange.

[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.