Part 4/9:
In a parallel narrative, Kang-woo, embroiled in the underworld, grapples with familial dynamics and his own entanglements with gang culture. Upon returning home, he witnesses peculiar behavior from his sister, further hinting at the malign influence that is spreading in their world. The introduction of Saejin Church, a mysterious organization with ties to the parasitic transformation, adds layers of complexity and intrigue to the narrative.