DEKUDEKU

A few months before mangarock deleted all their content I was reading this really cool manga but I don't remember the name but it went somewhere like: the mc is a poor girl who sees vampires and spirits she meets the other main character (Male) when he was out and saw the vamp and the Male mcwho is a noble? (the guys is rich and I think at the time the story is set it's appropriate to assume he was a noble) vampire hunter noticed that she peeped the vampire and fast forward he kind of employs her? I think? she basically moved in and he took her vampire hunting with him and etc. Also she had a sibling but I don't remember the details too well... again this was a while ago and sorry the description is all over the place but the manga just crossed my mind and I wanted to see what happened after...