Ichillin'

Ichillin' (Korean: 아이칠린; stylized as ICHILLIN') is a South Korean girl group formed by KM Entertainment. The group is currently composed of seven members: Jiyoon, E.Ji, Jackie, Joonie, Chaerin, Yeju and Chowon. Former member Sohee left the group in July 2022. The group made their debut on September 8, 2021, with the digital single "Got'Ya".

Logo of Ichillin'

The group name Ichillin' is a compound of the words Aisling, which has the meaning of dream and vision, and Chillin, which has the meaning of relaxing or coolness. This is made in hopes of encouraging the listeners of their music to dream and relax.

The official fan club name of Ichillin' is "Willing", which was announced on December 10, 2021 after a poll between 7 candidates that each of the members have picked. It has the meaning of ardent fans who enthusiastically like the group.

Ichillin' was to debut on August 25, 2021, but it was delayed in order to show more completeness in the group through improvements on the album. The group subsequently made their debut with their first digital single "Got'Ya" on September 8, 2021, two weeks after the supposed debut date.

The group then had their first comeback on November 11 the same year with their second digital single "Fresh".

Ichillin' in July 2022, with former member Sohee (first from right)

Ichillin' released their first extended play (EP) Bridge of Dreams on April 27, 2022, with "Play Hide & Seek" serving as the EP's lead single. The EP also features the two digital singles, "Got'Ya" and "Fresh", which were released in the previous year. The group then followed up promotions for "Play Hide & Seek" with one of the EP's tracks "La Luna", beginning June 11 the same year.

On July 15, KM Entertainment announced that member Sohee would be leaving the group, after discussions between the two parties. On October 25, it was announced that Jeong Ji-yoon, who was a contestant on Girls Planet 999, had joined the group.

The group was set to release their third digital single "Draw" on November 3, however, in light of the Seoul Halloween crowd crush, the release was postponed to November 10. The digital single is the group's first release to feature member Jiyoon, and the first release since former member Sohee's departure.

Ichillin' released their fourth digital single Challenger on March 23, 2023, with "Alarm" serving as the lead single. The group subsequently released the other track in Challenger, titled "Siren", on May 11. The track was previously inaccessible despite being released alongside "Alarm".

The group released their second EP I'm On It! on July 19, with "Kick-Start" serving as the EP's lead single. The EP also features the previous digital releases "Draw", "Alarm" and "Siren".

Ichillin' released their fifth digital single "Bite Me" on January 4, 2024, and subsequently their sixth digital single "Demigod" on February 5 the same year. The group then released their third EP Feelin' Hot on March 7, with "On My Lips" serving as the EP's lead single. The EP also features the previous two digital releases "Bite Me" and "Demigod", plus a 2024 re-recording of "La Luna", a song that was released with the group's first EP Bridge of Dreams in 2022.

The group released their seventh digital single Prequel on November 22, with "Official" serving as the lead single.

Ichillin' released a pre-release single titled "Glass Heart" on July 2, 2025. Subsequently, the group released their fourth EP Wild Cherry on July 31, with "XL (Extra Love)" serving as the EP's lead single. The EP also features the previously released single "Glass Heart".

• Jiyoon (지윤)

• E.Ji (이지) – Leader

• Jackie (재키)

• Joonie (주니)

• Chaerin (채린)

• Yeju (예주)

• Chowon (초원)

• Sohee (소희)

• Your Time (2022)

• Honorary Ambassador for Kosunnae Abandoned Animal Welfare Association (2022)