Turns out the uke had been bitten not by Ivan but by Alessandro. Hyun and a Ivan just happen to be in the same bed and that's how the misunderstanding happened. Drama happens and in the end Alessandro comes clean and gives Hyun the antidote for the marking, although they all sleep together bc Hyun is suffering but he didn't want to do it without Ivan so bam threesome. then Ivan marks Hyun which is why he has a mark in the last chapter, they're together while Alessandro leaves and takes that other dude with him. The little drama with the rumor also shows us how Ivan and Hyun met when Hyun was a new employee, and got along well but they had a fight and they just started fighting a lot until the point where the story begins. If that clears things up a little bit
Thank you so much
PLEASE IM SO FUCKING CONFUSED BY THE END I COULDN'T READ SHIT CAUSE IT GOT BLURRY AND EVERYTHING IS SO CONFUSING AND IM SO ANGRY BC I DIDN'T KNOW WHAT WAS GOING ONNN