Childhood friends who have been together for so long, from school to work and them having the somewhat ideal relationship. They too encounter difficult times but always manage to overcome together.
I just realized that around the end of the chapter, C whispered something to D. Maybe that's it wahahaha. Yahwi
Somehow, I already thought it's Dylan when he hugged Corey and didn't even moved even when he's getting kicked. Corey even made a face as if she realised it. That's why I think she called him when she kicked the phone. Well, that's just what I understood from the last few scenes in the chapter.
A people repeller, that's what Yahwi needs - the reason why he wants to keep Jooin close to him or there's more it...