[9] In September 2020, Woollim Entertainment announced that would be debuting boy group composed of seven members called Drippin.

[7] They released the reality program through KT's Seezn, We are Drippin, documenting the process leading up to their debut.

[21] On January 26, 2023, Woollim Entertainment announced that Alex's activities would be temporarily suspended due to his health.

[22] Drippin release their second Japanese single "Hello Goodbye" on March 15 as a six-piece due to Alex's hiatus.

[26] To commence the single promotion, the group released short movie titled EDEN through CGV on May 17.

[27] On July 2, Drippin successfully held their first fanmeeting since debut "Summer Day's Dream" at YES24 LIVE HALL.

[28][29] On July 28, Woollim Entertainment released a statement announcing Alex's departure from Drippin and the termination of his exclusive contract, with the group to reorganize and continue their activities with the remaining six members.