Please, Ms. Vampire

A vampire who doesn't want to be a killer is not a good student~ Nia has a small goal that she wants to achieve. She wants to be a super cool vampire~ However, the character management is not in place at all. She can only be cool for three minutes at most, and then she starts to flirt with the sky and the earth again... "Young master, can you stop hitting me?" "Bamboo horse, I am the one who saves you!" "Handsome guy, what's your surname?" Two years ago, Nia's father, who lived with him in the forest castle, suddenly disappeared, leaving only a letter and a ring that could suppress vampire powers and resist sunlight, and instruct Nia to join an underground killer organization to find her mother. When she got into the organization, she discovered that parents were hard to find, but fighting was super fun and there were a lot of handsome guys in the organization. As a result, during the beautiful days of fighting and pretending to be cool and flirting with handsome guys, Nia slowly discovered the traces of her parents and uncovered a bigger truth behind the underground organization. The heroine is a vampire, and other alien races include werewolves, witches, sirens, elves...