I just finished reading all of it some minutes ago, my impressions are bitter-sweet.

It was true since the beginning that this was just a light story, nothing too hard to digest, however in the last arc (death birds or something like that), things got actually serious for a bit, there were some highly dramatic events going on.
(a little bit of spoiler)

The suicide attempt, the badass-crazy vampire, the almost-out-of-nowhere-crazy-redhead... just to mention some of them.

So since things developed in such a serious way, I was very disappointed when the outcoming of it all, it was very childish again.

Plus, things I think this webtoon ows me:

-DEFINITELY Mari tasting the boyfriend's blood, c'mon!
-Some more detail on how whitey and redhead sorted things out, mainly him, did he REALLY decided on that path for a life?? And what was really their relationship? Something tells me it was a co-dependent relationship though...
-Ok, I suppose that Mari growing her fangs back was something more symbolic than useful... but she could have used them a bit, right??
-I didn't like the moralistic way in which all the “drinking human blood“ is immerse, at the end they really were born like that, and as long as the human agrees to it, what was the problem??!
-Being a main character at some part of the story, whitey is almost wiped out at the end.
-Can't believe everything just ended up with just an “I'm sorry“
-The artist, carrothead friend of Jaemin didn't get any punishment.
-I KNOW this is an institute plot but the last performance was too simplistic in my opinion
-Mari was too victim-ish, was't she? I expected a bit more of development on Jaemin, not just being the savior

Finish complaining, so... What do you think about it?