[6][7] Before entering the school, Haruko Nagaya and Issei Kobayashi had connected on social media, discussing joining the club.

[9] Natsumi Amano, the bassist for the club, left after a month,[10] so Kobayashi invited his childhood friend Shingo Anami,[9] who decided to join after hearing Nagaya sing.

[18] The song "Little Singer", based on En Okita's novel Kimi ni Todoke, Hajime no Uta (きみに届け、始まりの歌 (lit.

[20] The band made their major label debut under Epic Records Japan on November 7 with their EP Afureta Mizu no Yukue.

", became the band's first song to exceed 300 million streaming views,[26] and was certified double platinum by the Recording Industry Association of Japan.

[34] The band held their inaugural solo concerts on September 16 and 17 at the Nippon Budokan, with a total attendance of 16,000 people over the two days.

[36] On January 4, 2023, the band released their first video work titled "Ryokuoushoku Shakai x Nippon Budokan 20122022," featuring a recording of their performance at the venue on September 17.

[41] On July 22, the band performed overseas for the first time at the 2023 Super Slippa 12 music festival held at the Taipei Nangang Exhibition Center.