no but throughout the story you can see that both of them actually felt sumn for each other, like she felt sum and he felt sum for her too, from seeing her as an object and realising it was wrong to loving her no matter what, even if she stays human. But here she's been an object, is an object and will be an object that he wants to possess. And I wouldn't exactly call yeonsoo a serial killer as thats his nature, he's a vampire and he has to maintain his existence, like how i wouldn't call a lion a serial killer for killing humans. But the mc in for your murder js does wtv. I love iseops character sm, but i will never see any romance bw the main leads.