Spoiler alart
I recommend reading the novel cause manhwa is gonna take forever to finish:
So they know each other from middle school. Juyeon joins Kwon Jiwook's group of bullies bz he has a crush on him and while drunk confesses his love for Kwon Jiwook. Then Jiwook and his friend gangrape him and take videos, and continue to torture him for 8 month or so until others find out and they stop but never get punished or anything.
Juyeon is being nice to Jiwook rn cause even worst things gonna happen

where is this leading to? ppl keep saying they r excited/not excited for the collar because what happens after so just spoil me tbh