[2] The group debuted on April 1, 2020, with their first mini album Reason For Being: Benevolence with "Magnolia" serving as the title track.

[4] On July 15, the group released their second mini album Running TOOgether, with the title track "Count 1, 2.

[7] One day later, n.CH Entertainment responded to the disputes by stating that their contract was not formally signed for months, and that no expenses were paid since August 2020.

[13] On December 28, Wake One announced that Woonggi would be taking a break from the group due to an anxiety disorder, and thus TO1 would temporarily continue with the remaining members.

On April 30, WakeOne released an official statement via TO1's fan cafe, announcing member Chihoon's departure from the group.