Trefle was created as a
girl group featuring voice actresses
Yui Kano,
Yui Ishikawa, Chihiro Ikki,
Yukari Goto,
Minami Takahashi, and Marina Tanoue, who are all part of different talent agencies. The group was promoted through the online radio program
A&G Girls Project Trefle. Trefle released their first album,
Anison Kamikyoku + ChainChro on October 23, 2013, In April 2014, Nanami Kashiyama,
Eri Suzuki,
Karin Takahashi, and Ayumi Takamune were added as members. On September 26, 2014, they released their second album,
Anison Kamikyoku +. Afterwards, Trefle changed labels from Second Shot to
Feel Mee. On November 18, 2015, they released their first single, "
Butter-Fly", a cover of
Kōji Wada's 1999 debut single. On April 6, 2016, they released their second single, "Sakura." On July 29, 2016, the official website announced that after discussion with the members, Trefle would disband after their final concert on October 5, 2016. They released their final album,
Final Project, on September 28, 2016. == Members ==