It was the boys themselves who dropped the subtle hints for fans on the boys' official Twitter. Lim Young Min asked, "What recording is this??" with a photo of himself in the studio, while with a similar photo, Kim Dong Hyun said, "Still a secret~ Wait just a little bit."
The two boys received love from fans through their appearance on 'Produce 101' season 2, even though they did not make it in the top 11. They are a part of BNM Boys, which consists of the two, as well as current Wanna One members Lee Dae Hwi and Park Woo Jin.
Stay tuned for more updates on what these two were recording!