Roommate vampire

Hyun-Jae is a vampire who lives alone and is amateur at hunting for blood. One day, while I was sleeping, I woke up and I was drinking the blood of a stranger... ! Due to the penalty of reckless hunting, his grandfather, who is the president of the Vampire Association, imprisons him along with the victim Seo-Yeon, who plays the role of a blood supplier. Hyun-Jae is a vampire and Seoyeon is a human. What is their living together that doesn't match..?