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Remember the first episode of 'Produce 101' season 2 where Yoon Ji Sung expressed his wish to get a kiss on the cheek by NU'EST? 

While MMO Entertainment trainees were talking about fellow contestants, they mentioned the members of NU'EST and expressed excitement at the thought of meeting real celebrities. 

Daniel Kang first said, "I'm going to play LoL (League of Legends computer game) with them." Yoon Ji Sung fired back, "I'm going to play Overwatch with them, too." Daniel Kang replied, "I'm going to go to PC cafe with them." Yoon Ji Sung once again fired back, "I'm going to get a kiss from them. Right here," and pointed at his cheeks. 

Now, months later, Yoon Ji Sung is the member of the boy group Wanna One with NU'EST member Minhyun. 

In the preview for 'Wanna One Go', Yoon Ji Sung was shown achieving his goals by actually getting a kiss on the cheek by the idol sunbae. 

After receiving the kiss, Yoon Ji Sung screamed, "I'm a successful fan!"