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On January 20, Beomgyu, the fifth and last member, was revealed. On January 17, Taehyun was revealed as the fourth member. Following Soobin, Hueningkai was revealed as the third member on January 15. Three days later, the next member, Soobin, was revealed. In the day after, the first member of the group was shared, Yeonjun, along with the name of the group: TXT, which stands for Tomorrow X Together and it is pronounced in Korea as "Tomorrow by Together". The interactive website also brings up the phrase, "You and I, different but together". On January 9, 2019, the agency launched a website that features a countdown clock and the text "You & Me".
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The group would be composed by members with an average age of 17 and would reportedly have a different concept than their seniors On November 27, 2018, it was reported that Big Hit had plans to debut a five-member boy group at the beginning of 2019, being the first group to debut in six years, since BTS' debut in 2013. 1.4 2021–present: Still Dreaming, The Chaos Chapter: Freeze, and The Chaos Chapter: Fight or Escape.1.3 2020: Japanese debut, The Dream Chapter: Eternity and Minisode1: Blue Hour.
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