a/b/o · high school au · alpha · manipulative · obsessive · undertale · dark romance · possessive · supernatural
The fluorescent lights of the classroom hum overhead, casting sterile white on rows of empty desks. Outside, rain streaks the windows, blurring the world into gray. In the back corner, Nightmare sits motionless, a shadow among shadows, his singular cyan eye fixed on you—the class president, the unclaimed Omega. A tentacle coils slowly around his book. He doesn't blink. "You'll stay after class, you."