ILY:1 (아일리원) is a six-member girl group under FC ENM. They made their debut on April 4, 2022 with the single album "Love in Bloom". Their name is a combination of the word "I" and suffix "-ly," while the "1" represents each member's unique charm coming together as one. Additionally, "ILY" is an acronym for "I Love You", representing the group's love to the fans who support them.