MERAMERAHEART (Korean: 메라메라하트; Japanese: メラメラハート) was an independent live girl group managed by To Hermitage. They debuted on October 11, 2020 with a live performance at Geek Live House in Shinchon, Mapo, Seoul, and disbanded on September 1, 2021. Inititially a female duo, their final line-up consisted of three members. MERAMERAHEART was formed in September of 2020 with founding members Chihiro and Airi as an underground idol duo under the mangament of To Hermitage. They released official photos of the duo and the members before going onto making their live debut on October 11, 2020 with a live performance at Geek Live House in Shinchon, Mapo, Seoul. On November 1, 2020, MERAMERAHEART announced that they are looking to recruit new members and opened applications. Later, on December 31, 2020, MERAMERAHEART announced the graduation of founding members Chihiro and Airi. On February 18, 2021, second generation members Mia, Lingling and Yeowoon were introduced. The second generation of MERAMERAHEART is set to perform their first stage on April 21, 2021. Five months later, MERAMERAHEART announced that will be disbanding on September 1.