On June 17, IST Entertainment released an official statement regarding the debut lineup for ATBO, the winning boy group from the survival series 'The Origin - A, B or What?'. 

Previously, after a rigorous survival, a total of 7 trainees were selected as the debut members of ATBO, including Jeong Seunghwan, Oh Junseok, Seok Rakwon, Ryu Junmin, Bae Hyunjun, Yang Donghwa, and Kim Yeonkyu. Then, earlier this month, IST Entertainment released an official statement announcing trainee Yang Donghwa's departure from the debut team, after admitting to his school bullying rumors. 

Now, according to IST Entertainment, an eliminated trainee from the top 13 contestants of 'The Origin - A, B or What?' will be joining ATBO's lineup. After an evaluation of the 6 eliminated top 13 contestants over the course of 1 month, IST Entertainment has selected Won Bin as the new member of ATBO. 

Meanwhile, the new IST Entertainment boy group is slated to debut some time in the second half of 2022.