Responses
i guess you didn't pay close attention to the story, being out of the island is harmful to chongdo's health. that's why he wasn't feeling good after they returned to the island. so they can't simply "leave". that's what the whole plot is about. please read thoroughly before judging the story next time.

Honestly i understand, fear controls them bUT IF THEY ARE THAT SCARED WHY DONT THEY LEAVE THE MF ISLAND BRUH. I guess the family probably pressured them? No matter how scared you are, obviously you wanna get outta there dont you?? UGHHH frustrating but i guess theres something shady going on with how people keep wanting to serve this mf family