Tbh, the storyline has GREAT POTENTIAL! A vampire BL where the ML falls in love with the boy he's supposed to kill. It could've been amazing, and it sounded extremely interesting when you read about it.

The problem is, it didn't quite live up to the expectations most of us had set for it. The story was a little fast paced. with 20min ep they could be able to pull it out a little, explain more of their lives. Maybe more about the fact that he was an orphan and was once kidnapped?? They just brought it up and completely forgot about it, it seems. They could also tell more about the story between the ML and his old bf that he killed.
They just met, fell in love, slept together and then he died.
Another thing that kinda ruined the show for me was the awkward acting. The villain doesn't need an underbite, and everyone is allowed to blink, are they not? The ML is hot, yes, but his acting isn't top tier just yet. It kinda reminds me of Color Rush and Hwalls acting back then. Just that these two seem to have a bit more chemistry.
Send the ML to a few more workshops and teach him to blink.
Also... the way he killed the other vampire... it looked like he was grazing his neck, and who tf dies sitting like that??!

Great idea, poorly made. It seemed like the budget was relatively small, as the production wasn't at the same level as we're used to seeing with K-dramas.
Hopefully we get to see them redeem this plot with a new vampire BL soon, cause this storyline just needs more....story?