Your name is vampire

Daniel, Seongwoo, Minhyun, Jooyeon (a made-up character), and Nayoung (a made-up character). All five of these are vampires. Soojin was adopted by her grandmother, her nanny, after her parents suddenly passed away. She was separated from her biological brother, Minhyun, and cut ties with her siblings, Da (Niel) and Na (Young), as well as Seongwoo. One day, when she was a freshman in high school, the Dana siblings, Seongwoo, and Minhyun transferred to her class.