Doesnt fit the storyline you want (someone else reccommended the only one i can think of that fits that) but here are some of the manhwa i have read and tagged vampire
D:AZE
Blood Sacrifice
Not My Blood
The Pain in My Neck
K's secret
I'm Yours, Blood and Soul
Sweet Man
Bottomless Swamp
Sun's Blood
Sweet Man
Bitten By Moonlight
Dine With a Vampire
Blood Bank
Blood Link
Blood and love
they are too cute not to reco
sorry mc loves vampires
tyy
A lot to choose from tyy
tyyy
I want to read one where there are multipul <--(My brain is too tired to figure out how to spell this...) vampires and a MC who doesn't believe in them un-till they meet the vampires and/or the MC lives with them. (Sorry if anything is spelt wrong, my vision keeps going blurry idek why, so I can't really read out what I'm typing... T-T)