I.O.I 10th Anniversary Reunion: 'IOI: LOOP' Album May 19 and 2026 Tour

The iconic project group I.O.I will reunite to celebrate their 10th debut anniversary with a new mini-album and a multi-city concert tour. Led by Chungha and Jeon Somi, the members signed special contracts prioritizing this reunion, which marks their first group variety appearance in a decade.

Key Facts

• I.O.I will release their third mini-album, IOI: LOOP, on May 19, following a pre-release track on May 4.
• The group has completed audio recordings, album jacket shoots, and music video filming while practicing six hours daily.
• The "2026 IOI Concert Tour: LOOP" begins in Seoul on May 29, with stops in Bangkok and Hong Kong.
• Jeon Somi co-wrote and co-composed the first two tracks: the title song "Sudden" and a dance track reminiscent of "Pick Me."
• Kang Mi-na and Zhou Jieqiong will be absent; Mi-na is currently focusing on her acting career.
• Seven members, including Lim Na-young, Chungha, and Kim Se-jeong, will appear on JTBC’s Knowing Bros this May.
• Chungha spearheaded the reunion, coordinating contracts that prioritize I.O.I schedules over individual agency activities.

Key Terms

• Produce 101: The Mnet audition program that formed I.O.I in 2016.
• IOI: LOOP: The title of the 10th-anniversary album and tour, symbolizing the cycle of time.

Key Quote

"We wrote contracts and went to the agency to reunite... We promised from the start to prioritize I.O.I activities over individual activities." — Jeon Somi

Next

• May 4: Pre-release track unveiled.
• May (TBD): Appearance on JTBC's Knowing Bros.
• May 19: 10th-anniversary mini-album IOI: LOOP launches.
• May 29: "2026 IOI Concert Tour: LOOP" begins with a three-day residency in Seoul.