Produce 101
The final episode of Produce 101 formed I.O.I's eleven-member lineup. This is the beginning of the group's shared story.
LoadingLoadingThe I.O.I fan archive
A fan-made archive of I.O.I, the eleven-member girl group formed on Produce 101 in 2016: every member profile, every song and album, and a day-by-day record of the group's activities through the 2026 reunion. Every memory is checked against its source before it joins these pages. Independent and non-profit.
Begin the journey01 / Profile
Open the constellation to move from the group's story into each member's profile, TMI, career path and favorite I.O.I moments.
02 / Music catalog
Follow the essential group releases first, then discover units, solo music, OSTs and later groups where the members’ voices continue.
03 / Activity archive
Move through ten years of broadcasts, releases, fan events and stages in a filterable visual archive.
The final episode of Produce 101 formed I.O.I's eleven-member lineup. This is the beginning of the group's shared story.
I.O.I released the debut mini album Chrysalis with its title track Dream Girls on May 4, 2016.
The seven-member unit released Whatta Man (Good man), introducing one of I.O.I's most distinctive visual eras.
The full group returned with Very Very Very, the title track of the mini album Miss Me?.
Downpour became I.O.I's final single before the conclusion of the original project-group activities.
04 / Events
Member birthdays, anniversaries, broadcasts and fan gatherings are gathered in one calendar designed for planning the next moment together.
05 / Community
The community is a home for a new topic, a reaction to an old stage, a small recommendation or the detail only another fan would understand.
06 / Countdown
A quiet annual space for the promise fans held close, and for the letters that will eventually carry it forward.
Enter the countdownMore than a record
Find out why this fan journal exists, or help make it clearer with a correction, source or idea.
I.O.I concluded its original activities following the Time Slip Concert, closing a short chapter that fans continued to remember.
Nine members reunited for the tenth-anniversary project and released the third mini album I.O.I : LOOP, led by Suddenly.
