[4] In November 2019, the group debuted with the single "Q-vism" from SME Records.

The song was the opening theme of the TV anime Psycho-Pass 3 which started broadcasting in the same month.

[8] In March 2020, they digitally released "Synthetic Sympathy" which was the theme song for anime movie Psycho-Pass 3: First Inspector, started broadcasting in the same month.

[10] On January 3, 2021, for the first time they appeared publicly in the online festival "Sony Music Anime Songs ONLINE Nippon Budokan" and performed "Q-vism" and "Synthetic Sympathy"[11] In January 2021, their new song "VIVID VICE" was selected as the opening song for the 2nd cour of the anime Jujutsu Kaisen.

The lead song "VIVID VICE" was pre-released in January and recorded the 1st place on Oricon's daily ranking.