However, Gwi-nam threatened Su-hyeok that he will post the embarrassing pic of Eun-ji right away if he lets Eun-ji and Cheol-soo stay, so Su-hyeok let them stay to avoid the risk and continue their shenanigans.
His main source of income is from his career as an actor and model.
After the apocalypse, he gets infected and becomes a human-zombie hybrid.