Okay... now we are getting into some mental punishment since the physcial and sexual punishments are done now the mental punishment is coming its way, he wants to ensure that jiwook stays obedient to him, so my theory is is that jihoon still loves the guy, but wants to cement the loyalty from Jiwook so he never leaves thats my theory.
For anyone whose gonna be reading this the artwork is really good however there is abuse like domestic violence and sexaul assault ans sexual abuse, just letting yall know they are trying to pass this off as BDSM but its really not, BDSM is different by contrast to this.( ̄∇ ̄")