"IOI's Jung Somi, 3 reasons why she will be joining Twice"
1. At the end of the Twice's TT MV, "To be continued" showed up after a door opened hinting that someone was coming in
2. This album's b-side track. Normally Twice members are 9, but there was a track named "1 to 10"
3. Jun Somi was seen dancing Twice's TT during IOI's stage. When they won #1 and gave the speech, they were together until they finished the greetings