Manga Scent (Mari Kim)

Gaon used to be a boy but now he is a vampire. This condition is the inherity from his mother. Once Gaon found out that his closest friend, Dong-yi, is in love with his brother who is older. Gaon can't control himself when it comes to blood smell. Knowing about this condition, he decides to make a deal with Dongyi - if Gaon graduates college without problems, he helps him to get closer with his brother. But plans crash when Yohan starts to get possessed with Dongyi. This strange relationships starts to make Gaon nervous ang angry.