I.O.I Turns a Nine-Year Wait Into a 10th-Anniversary Comeback

I.O.I’s reunion is no longer a rumor or a nostalgic wish. The project girl group, formed through Mnet’s Produce 101 in 2016, has returned to the stage for a 10th-anniversary project that turns one of K-pop’s most-discussed unfinished stories into a full comeback campaign.

The group opened its Seoul concert run on May 29 at Jamsil Indoor Gymnasium under the title 2026 I.O.I Concert Tour: LOOP in Seoul. According to Yonhap’s concert report, the members greeted fans under the I.O.I name for the first time in nine years, visibly moved by the noise of a full venue and by the chance to perform again as a team.

A Project Group With Unusual Staying Power

I.O.I originally existed on a short timeline. The group debuted in 2016 after being assembled through the first season of Produce 101, released hits including Dream Girls, Very Very Very, Downpour, and When the Cherry Blossoms Fade, then concluded official activities after only a brief run. Most project groups are expected to fade into archival memory after disbandment; I.O.I instead became a reference point for the audition-show era of K-pop.

That history is why the current reunion carries weight beyond another anniversary event. The 2026 activity marks the group’s 10th anniversary and brings back nine members after years spent on separate paths in music, acting, and entertainment. Kang Mina and Zhou Jieqiong are not part of this round of activities, but the reunited lineup is still large enough to revive the group’s original stage identity for fans who waited through the long gap.

The Seoul concerts arrived after the release of new music. Yonhap reported that the group’s new song Suddenly, released on May 19, reached No. 1 on major Korean music charts including Melon. For a team that had not promoted together for nearly a decade, the chart response offered a measurable sign that public curiosity and fan loyalty had both survived the long pause.

Old Songs, New Stakes

The opening concert leaned directly into that shared memory. I.O.I began with Pick Me, the Produce 101 theme song that first introduced the members to the public, before moving through signature tracks and newer material. The set list, as reported by Yonhap, included Dream Girls, Very Very Very, Downpour, When the Cherry Blossoms Fade, Suddenly, and SPF 100+.

On stage, the members framed the comeback as both a professional project and an emotional reckoning. Kim Do Yeon credited fans for making the reunion possible, while Kim Se Jeong described the recent days as happy enough to bring tears. Lim Na Young said she had missed the sound of the audience, and Jeon Somi noted that I.O.I’s previous final concert had remained her last concert with the group until this return.

Those comments underline the unusual position I.O.I now occupies. Each member has spent the intervening years building a separate career, while the group name remained suspended in memory. A reunion therefore requires more than nostalgia; it requires calendars, contracts, rehearsal time, and a shared willingness to revisit an identity that ended before it had time to mature naturally.

Why This Reunion Matters

The comeback also arrives at a moment when K-pop’s relationship with project groups has changed. Audition-created acts have become a familiar part of the industry, but I.O.I remains one of the format’s defining examples: short-lived, commercially successful, emotionally intense, and influential enough that fans continued to ask for a return long after the original contract period ended.

By reviving the group for a 10th-anniversary album and tour, I.O.I is testing how far that legacy can travel in the present tense. The Seoul run continues through May 31, followed by scheduled overseas dates in Bangkok on July 6 and 7 and Hong Kong on July 20 and 21. That itinerary turns the comeback into a regional event rather than a one-night commemorative appearance.

There are limits to what this reunion can be. It is not an 11-member full-group return, and it does not erase the careers the members have built outside I.O.I. But that may be part of its appeal. The 2026 version of I.O.I is not trying to recreate 2016 exactly; it is presenting the group as a meeting point for artists who have changed, fans who waited, and songs that still carry a particular emotional charge.

The title LOOP captures the shape of the moment neatly. I.O.I’s story has circled back to the stage, but not as a simple repeat. Nine years after saying goodbye, the group has returned with new music, chart momentum, and a tour that suggests this anniversary is being treated as a living chapter rather than a footnote.