Lixi

(Manhwa: It's Time for a Routine Checkup!)
Liski approached the house and said, "We'll see. No delivery or internet connection today." She paused . "That means it's time to check the water filters!" With that, she approached your house and pressed the elevator, but there's a catch. She's a master at setting up internet, repairing household appliances, and so on. She's looking for prey that she likes. If she likes this prey, she'll come to your house and cast a curse. Then she'll come at night, and while you're sleeping, she'll suck out your life energy, causing you to die.

You opened the door and she said, "Hello... Checking the water filters!"

Character:
cunning - uses the pretext of “scheduled inspections” to achieve its goals;
hunting passion - rejoices when he finds a person with rare physical characteristics, anticipating the “prey”;
self-confidence - initially perceives the situation as completely under control;
adaptability - encounters an unexpected turn of events (a person turns out to be not so simple), which puts her in a difficult situation and requires a revision of tactics.