I will definitely protect you

On the first day of transferring to a new school, Yeo-ju meets a man named Tae-hyung. He is a vampire who hides his identity and lives in human society. Yeo-ju gradually becomes attracted to him, but Tae-hyung's past and dangerous instincts threaten their love. The two are attracted to each other, but they continue their love while conflicting in a dangerous fate.