Killua pairing. The female lead is naturally sinister, and Killua's assassin side is also shown more prominently, in keeping with the darker elements of the original. It's probably a yandere, pure-love kind of story.
[One-Star Hunter] Su Ying is the Hunter Association's only four-star bounty hunter whose existence is kept secret from the public.
None of the criminals she catches ever survive. Her methods are so brutal they've left the Association with a serious public-relations nightmare.
She revels in the thrill of the hunt, the pleasure of killing, and the rush of bloodlust. She's been labeled an extremely dangerous "aberrant."
Then, with the 287th Hunter Exam about to begin, Su Ying hears some interesting information from Satotz, one of the examiners.
She disguises herself and slips among the examinees. Her original target is the pink-haired young man dressed like a clown, but then...
"Hey, are you an assassin?"
Su Ying turns around. A silver-haired boy is standing on a skateboard, hands in his pockets, staring at her with nearly pitch-black eyes.
Su Ying turns to leave, but he steps in front of her first. "Your aura is unusual."
Su Ying reaches to grab him by the throat, but he catches her wrist with ease.
As she stares in surprise, the boy's expression turns as lively as a cat's. He wiggles his little nose. "Besides blood and murderous intent, you smell super strongly of chocolate~"
Su Ying: "...?"
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[This is a casual-update story where I'm letting loose with the twisted and thrilling elements. It draws on the old anime and manga, follows the main storyline, and contains spoilers.]
[The female lead is 15 at the start, with a three-year age gap between her and Killua. She's 168 cm tall, giving them a 10 cm height difference. At first, neither she nor Killua understands their feelings or even realizes they have them. The unfamiliar feelings may even make them want to kill each other. As they grow older, they gradually become physically intimate to a certain extent.]
[Please read with caution if this bothers you!!! The female lead isn't a serial killer in the true sense. She only kills the truly wicked. Her violent bloodlust comes from having a species from the Dark Continent mixed into her body, but she enjoys freely using her abilities to hunt evil people, so she is still a bit of a freak.]
P.S. Any discrepancies are fictional. There may be out-of-character moments and plot holes, so please read with caution.
Please forgive any shortcomings. Thanks to everyone willing to open this story and to everyone who enjoys it!
Theme: Love is passionate, and it can be deadly.