most likely yes (??) tbh, the OG Nox isn't really explained well... he's just portrayed as an "unstable omega" or a bully who uses his pheromones to torment Yuri— and current Nox too.. we know nothing
In simple terms she thinks he’s a manwhore and hates him for being with her mom kinda on the basis of what you desire but can’t have (๑•ㅂ•)و✧ Smuttymcsmut
Ufffff that one panel of Jiwook damn