I.O.I celebrated their 10th debut anniversary by wearing their group uniforms and recreating the choreography of their hit song "Pick Me" in a video released on their official SNS. The members wore the same outfits as during their past activities, including pink sweatshirts, black short pants, and knee socks, and performed perfect synchronized dance formations standing in lines reminiscent of their "Produce 101" days in the practice room. The video captured the members singing "Pick Me" while matching the choreography. Fans responded with comments such as "It's exactly the same as 10 years ago" and "It really feels like we've gone back to 2016."

I.O.I was formed through Mnet's 2016 audition program "Produce 101" and released numerous hit songs like "Dream Girls" and "Very Very Very" before ending team activities in January 2017. To commemorate their 10th anniversary this year, they reunited and are preparing to release a new album and hold a concert in May. Nine members—Lim Nayoung, Chungha, Kim Sejeong, Jung Chaeyeon, Kim Sohye, Yoo Yeonjung, Choi Yoojung, Kim Doyeon, and Jeon Somi—are participating in this activity, while Kang Mina and Zhou Jieqiong are not attending due to scheduled commitments.

Ahead of their May comeback, I.O.I has completed jacket and music video shoots, and starting with their Seoul concert at Jamsil Indoor Stadium from the 29th to the 31st of next month, they are also scheduled to tour major Asian cities including Bangkok and Hong Kong.