Ivan, Till, Mizi, and Sua had all been friends since middle school. Ivan and Sua were fraternal twins and spent the first 8 years of their lives in foster care. Till was stuck living with his dad until he was 9 and his mom was able to take custody of Till. Mizi had the healthiest home life of the 4 of them.

Once they all got into high school, they started a small band together but Mizi also started getting closer with one of the seniors, Hyuna who also had Luka always following not too far behind her.