On September 8, 2025, at 1:26 AM KST, EXO dropped a teaser on social media. The image showed the words, “DECEMBER, 2025” along with the phrase, “WHEN WE BECOME TRUE ONE, A NEW WORLD AWAKENS.”
The timing shocked fans. The phrase was not random either. It directly ties back to their debut song MAMA from 2012. That song began EXO’s storyline, one filled with myth, twelve powers, and the tree of life.
In the MAMA video, the narration said the two legends would one day return to “one perfect root.” The new teaser echoes that promise. Instead of “become one,” it says “TRUE ONE.” Fans immediately linked this to the possibility of all nine members reuniting.
The teaser’s release during a lunar eclipse made things even more symbolic. At the exact moment of posting, Korea was under the eclipse.
Fans online pointed out the timing, calling it fate. Some even shared screenshots of the eclipse next to the teaser. For many, it felt like history looping back.
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A Hint of OT9?
Right now, EXO’s member status gives weight to the theory of a full reunion. Kai is serving in the military. Sehun is the only member still waiting to enlist. The rest have completed their duty.
Several signs point to OT9. Suho and Chen both planned solo albums for late September. That timing clears their schedule by winter. Lay has been more visible with EXO members again.
His appearances at SM events and online interactions fuel the rumor. Even Kai, during his New York concert, mentioned his dream of bringing EXO to the United States together.
This teaser is EXO’s first official group activity announcement since EXIST in July 2024. That makes it a milestone. It signals SM Entertainment is ready to put the group back in focus after years of enlistments and scattered solo work.

Fans React
The fandom wasted no time. Within hours, Reddit threads on the comeback gained over 150 comments. Twitter, Instagram, and Korean community boards all lit up. Words like disbelief, relief, and joy filled the comment sections.
For fans who waited through the long hiatus, this felt like the announcement they had been waiting for. Many noted that the comeback being tied to MAMA gives it weight. It is not just a music release. It is a nod to the beginning of EXO’s identity.
Confirmed vs. Speculated
What is confirmed: the release is in December 2025. SM Entertainment is producing it. The theme is tied back to the MAMA era mythology. The release type is still unclear, but signs suggest it could be a full album.
What is speculation: the member lineup. Everything hints toward OT9, but no one has confirmed Lay’s official return. Fans believe he will join, but that remains to be seen. There are also questions about whether this project will include touring or just a Korean comeback.
Solo Activity Timeline
Each member’s solo work in 2025 seems designed to lead into the group comeback.
Suho released Who Are You on September 22. It was his fourth mini album. The timing allowed him to wrap up promotions before group plans began.
Chen followed a week later with Arcadia on September 29. It marked his fifth solo mini album. Again, the schedule freed him for December.

Kai came back earlier in April with Wait On Me. It was his fourth solo mini album and his first after finishing military service. He even toured the US in the summer. That comeback set him up for group work before re-entering the army.
Xiumin released Interview X in March. It was his first album under Baekhyun’s INB100 company. His Asia fan tour carried him through spring.
D.O. dropped DUMB, a digital single, in September. It featured PENOMECO. Though he left SM for solo management, he still remains tied to EXO for group projects.
Last solo release was under INB100, his own company. Currently focused on company operations and preparing for EXO’s December comeback.
Chanyeol is rumored to release something later this year. Sehun just finished his military service this September. Lay has been active in China, but hints suggest involvement in the comeback.
When lined up, the solo projects form a clear picture. Each member cleared schedules by late fall. December becomes the only logical slot for a group return.
Why It Matters
This comeback holds weight beyond just music. Thirteen years have passed since MAMA. The reference to “TRUE ONE” signals a reset. It is a statement about unity after years of separations.
The release coming during the winter also carries symbolism. EXO built much of their legacy around winter albums. Their name itself means “from EXOplanet,” linked to cosmic themes. A lunar eclipse teaser matches that pattern.
Still, there are reasons for caution. Nostalgia does not guarantee strong music. Fans want more than recycled storylines. They want proof the group has grown.
If the album leans too much on old ideas, it could disappoint. But if it balances myth with modern sound, it could become one of their most defining works.
Bottom Line
December 2025 will bring EXO back. Confirmed details say SM is behind it, and the concept ties to MAMA. Strong evidence suggests all nine members could stand together again. The fan energy shows the demand is there.
The strategic solo releases, the symbolic teaser, and the timing all point to a carefully planned return. This comeback could mark the end of the military era for EXO and the beginning of something bigger.
Whether it becomes their strongest chapter or just another nostalgic cycle will depend on how the music lands. But for now, the signal is clear. EXO is aiming for one of their most important comebacks yet.
How Does this Article Make You Feel?
Kavita Mishra is a dynamic writer and passionate Korean entertainment enthusiast, combining her love for K-pop and K-drama with a flair for storytelling. With a keen eye for the latest trends, Kavita crafts articles that capture the pulse of K-pop idols, chart-topping hits, and the most buzz-worthy dramas taking over screens worldwide.
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