Test Subject (Isaac Night x Reader)

Y/N keeps to herself at Nevermore Academy, a vampire who shields herself from sunlight and avoids the attention of her peers. Francoise, drawn to Y/N's quiet steadiness, follows her through the halls, unaware she's also catching the eye of her brilliant, calculating older brother, Isaac. What begins as casual curiosity from Isaac- a girl who resists being known, a puzzle unlike any he's seen- slowly grows into an obsession. As trust, boundaries, and unspoken tensions build, Y/N finds herself pulled into a game she doesn't fully understand, where every interaction is watched, measured, and tested.

Kind of psycho yandere Isaac. This story is kind of dark I think.