[5] On June 14, Cube Entertainment revealed that Jo Kwon, BTOB’s Eunkwang and Im Hyun-sik, CLC’s Sorn and Seunghee, Pentagon's Hui and Jinho, and (G)I-DLE’s Miyeon and Minnie prepared a special stage at Mnet’s M Countdown and KBS2’s Music Bank under the name 'United Cube' where they perform a song called 'One Step'.

The song was composed and written by Hyunsik about hope and comfort with a message that no matter how tired and worn out you are, as long as you keep taking one step forward towards your dream, you will reach it one day.

[6] On the day of the concert, a press conference was held to commemorate the opening of '2018 UNITED CUBE -ONE-' at 2nd KINTEX Exhibition Center.

[11] Triple H gave a sneak preview of their new song Retro Future ahead of their comeback.

[12] Lai Guan-lin made a surprise appearance on stage for the encore with his fellow labelmates.