On April 4, WINNER made their long-awaited and also first ever comeback as a group of 4. 

In an interview with OSEN, the members opened up about the absence of Nam Tae Hyun. Kang Seung Yoon stated, "Nam Tae Hyun couldn't be with us due to health issues. It's true that it was difficult. It wasn't just 'Oh well we can't do anything'. We were concerned about our fans. There were a lot of people who loved Nam Tae Hyun and Nam Tae Hyun did well as the main vocal so that led to concerns."

He continued, "But we couldn't spend days just worrying. I believed that we could no longer make fans wait. So we jumped into producing to make a comeback. We concentrated on self-development so the fans couldn't feel his emptiness. We had no choice but to grow."

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Kim Jin Woo added, "With Nam Tae Hyun gone, the vocal parts increased. I worried a lot about how to consume that. I concentrated more on the vocals. I received lessons even on breaks and recorded multiple times. I kept on practicing and practicing."

Kang Seung Yoon stated, "Now we are 4 members so we just have to accept it. The 5 of us will forever be in the hearts of the fans. We don't want to erase the 5 member WINNER. I hope they give a lot of love to the 4 member WINNER too."