Yoo Jeongyeon
Oldest brother from the vampires
Second oldest from the childhood friends
Yoo Y/N
Second oldest from the vampires
Fourth youngest out from the childhood friends
Yoo Dahyun
Third oldest from the vampires
Third youngest from the childhood friends
Yoo Chaeyoung
Second youngest from both
Yoo Tzuyu
Youngest from both
Im Nayeon
Oldest from her siblings and their childhood friends
Im Momo
Second oldest from her siblings
Third oldest from their childhood friends
Im Sana
Third oldest from her siblings
Fourth oldest from their childhood friends
Im Jihyo
Second youngest from her siblings
Fifth oldest from their childhood friends
Im Mina
Youngest from her sibling
Fifth youngest from their childhood friends
There will be more characters that you will meet further in the book