Everything happened really quickly and we did not really have time to get in depth of the story. To make this show watchable, you need great acting and I think the two leads were great!! The end is a bit rushed as well but overall I felt all the emotions portrayed which is what makes it a good show.
I love how the human (Yoon Seo Bin) is not just naive and clueless, he knows what he wants and is ready to suffer for his love.
We all know Kim ji woon since he seems to be very suitable for BL Vampire genre (his second BL as a vampire), and he protrayed a wider range of emotions there, we can really feel his love.