On June 16 KST, 'United Cube - One' concert was held at KINTEX in Ilsan where thousands of fans came out to show their support for Cube Entertainment's artists. During the event, Lai Kuan Lin sent out a video message first saying, "I should be here as well, everyone knows I'm part of the Cube family right?" He continued, "Even though I'm working hard, promoting as Wanna One, I'm still sorry for not being able to be there together as a Cube artist."

"It's disappointing as I wanted to show a great collaboration with Cube sunbaenims. I'll make sure to show everyone a great collaborated stage next, please wait a little longer," he finished.

However, towards the end of the show, the Wanna One member made a surprise appearance as "Energetic" and "Pick Me" came on! Seeing the idol, the audience erupted and the rest of the Cube artists greeted him with open arms to finish the show.

Check out some of the clips below! Were you able to attend 'United Cube - One'?

180616 [VID] Cube Concert

HYUNA AND KUANLIN !!! BUBBLE BUBBLE POP aaaaaa so cute pic.twitter.com/0QkCcvcOOx#??? #WANNAONE #???? #LAIKUANLIN #??? #CUBE #guanlinMY

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— KUANLIN MY (@GUANLIN_MY) June 16, 2018