X:IN

1. Name

X:IN, the stylized form of EXIN, is derived from a Latin word meaning, furthermore, where "X" symbolizes an unknown variable, a concept used in mathematics, representing the group's aim to explore limitless possibilities in music and performance.^[4]

2. History

2.1. Pre-debut activities

E.sha, had participated in several pre-debut groups, including MEP-C, Laonzena, and trained under GBK Entertainment. She chose the stage name E.sha as part of her new career chapter and is recognized for her dance abilities and choreographing her group's songs.^[5]

Nova, was part of the Russian dance cover team Dalcom, where she performed K-pop dance covers. She also worked as a voice actress, dubbing characters in Russian. Nova joined Escrow Entertainment through online auditions and underwent only four months of training before debuting.^[6][7][8]

Aria, born as Gauthami, is a former Indian child actress who appeared in Malayalam movies such as Melvilasom and Thank You.^[9][10] Like Nova, she joined Escrow Entertainment through online auditions.^[11]

Chi.U, made her solo debut in November 2021 and was a member of the dance team Majesty. Additionally, she appeared in episode two of Dreamcatcher's Why Not Me. After leaving X:IN, she made her debut in girl group I:MOND.^[12][13]

2.2. 2023–2024: Debut with Keeping the Fire , line-up changes, Synchronicity, The Real, Seoul-Moskva and Acha(%)

On March 15, 2023, they made their first appearance on an online broadcast show K-stage, where they performed their pre-debut song "Who Am I" and later released its performance video on YouTube.^[14]

They made their debut on April 11, 2023, under Escrow Entertainment as a five-member group composed of Roa, E.sha, Chi.U, Nova and Aria, with digital single "Keeping the Fire" under Escrow Entertainment and performed it on various music programs.^[1][15]

Due to personal circumstances, Chi.U left in June 2023, followed by Roa in July 2023. In July 2023, the company introduced two new Korean members, Nizz and Hannah.^[16]

On August 5, 2023, Escrow Entertainment released a poster announcing the release of their first extended play album titled Synchronicity, released on August 30, 2023. The album features a blend of pop and dance genres, with "Synchronize" serving as the title track..^[17]

On February 5, 2024, X:IN announced their second extended play through releasing a poster, The Real, which was officially released on February 25, 2024, under Escrow Entertainment. The album features four tracks, with title track "NO DOUBT" filmed in Cebu, Philippines. Prior to the album's release, the group dropped the pre-release single "My Idol" on February 19, 2024.^[18] The album was described by leader E.Sha as a reflection of the member's personal experiences, capturing their emotions and struggles on their journey as idols.^[19][20]

In May 2024, they visited Moscow, Russia, where they served as judges at the Asian Dragon Fest, performed a concert, and held a fan signing event.^[21][22] During this visit, they collaborated with Russian artist Anatoly Tsoy, known professionally as TSOY, to record the single "Seoul – Moskva".^[23] The song, featuring lyrics in Russian, English, and Korean, was released on October 25, 2024. TSOY expressed excitement about this groundbreaking collaboration, noting that it was the first of its kind between a Russian artist and a K-pop group. He joined X:IN on stage during their second visit to Russia, performing live at their concerts in Moscow on November 2, 2024, and in St. Petersburg on November 3, 2024.^[24][25] This marked the first live performances of their collaboration.^[23][26]

X:IN released their digital single "Acha(%)" on December 13, 2024, which conveys a message about confidently embracing individuality, overcoming obstacles, and letting go of toxic influences while staying true to oneself. This was preceded by the release of "Keeping the Fire Rock Ver." on December 12, 2024.^[27]

2.3. 2025: Departure from Escrow Entertainment, Defend Myself , and Rrrun

On April 9, 2025, it was announced via the official platform b.stage that they had terminated their contract with Escrow Entertainment. The group will continue their future activities under the management of a new agency, BeBy Entertainment.^[28][27]

After a year long hiatus, the group confirmed that they are preparing for their comeback which is filmed entirely in Los Angeles, California, USA.^[29][30]

On April 22, 2025, X:IN released concept photos announcing the release of their third extended play album under new agency BeBy Entertainment titled Defend Myself released on May 17, 2025, with title track "Attention seeker" and 3 b-side tracks.^[31]

On September 4, 2025, they released their first single album titled Rrrun consisting of title track "Rrrun" and a b-side track "Creamy".^[32][33]

In August, 2025, they participated in the 2025 Chuseok Special of the Idol Star Athletics Championships (ISAC), where Nova won first place in the dance sport category, surpassing Kep1er's Xiaoting.^[34][35]

2.4. 2026—present: Hyper, Girls on Fire and Chain Reaction

On February 20, 2026, they released their fourth extended play, Hyper, with title track "Dazzle Flash" shot in Dubai.^[36]

In June 2026, X:IN's agency, BeBy Entertainment, was selected as a beneficiary of the "Global Leap Forward Support" project—an initiative launched by the Ministry of Culture, Sports and Tourism and the Korea Creative Content Agency to support international expansion for small and mid-sized K-pop agencies.^[37][38]

On August 21, 2026, they released their debut Japanese extended play, Girls on Fire in Tokyo.^[39]

On October 6, 2026, they are scheduled to release their first studio album, Chain Reaction, an 11-track album exploring themes centered on chemistry and featuring the title track "Zzirit" with Luísa Sonza.^[40][41]

3. Members

Current

• E.sha (이샤)
• Nizz (니즈)
• Nova (노바)
• Hannah (한나)
• Aria (아리아)

Former

• Roa (로아)
• Chi.U (치유)

4. Discography

4.1. Extended plays

4.2. Single albums

4.3. Korean singles

4.3.1. Singles

4.4. Japanese singles

4.4.1. Singles

5. Filmography

• X:IN ON&OFF (2023)^[48]

6. Concerts and Live Performances