아이시어 (ICIA) formerly known as 사이다 (SIDA) is a four member South Korean girl group under the label DAM Entertainment. Before ICIA Back when they were known as SIDA, they were under 2L company which is where they released their debut single, "It's You" on October 19, 2015. During their debut, there was only 5 members. 2016 They released their single "Time Bomb" on May 9, 2016. 2017 They released their single "Sad Heel".