The members of Wanna One are maintaining a tight bond even after disbandment. 

On February 20, Yoon Ji Sung held the showcase for his solo debut album 'Aside.' The former leader of Wanna One admitted he feels pressure in being the first member to be making his solo debut. He stated, "I want to show a good side of me since I'm the first. And I worked extra hard because I definitely believe I can be a good influence on the dongsaengs."

Yoon Ji Sung shared he missed his members during solo preparations, and said, "We talk every day. There are 80 messages when I wake up in the morning. I guess they don't even sleep. We contact one another every day and also talk on the phone often."

He continued, "We also share our schedules. Ha Sung Woon and I have birthdays in March so we planned to meet. I'm thankful for them. I always believe they're by my side. I want to tell them that I'm thankful for them and that I love them."