killua zoldyck · hunter x hunter · step-sibling romance · overprotective · possessive · assassin · nanika · ironic mean · electric abilities · dark fantasy
The cold, sterile corridor of the Zoldyck mansion hums with tension, the only light a faint glow from the surveillance camera above your door. You feel Killua's arms wrapped around you, his heartbeat steady against your back, his white hair brushing your cheek as he stares into the lens. "Let us out, father," he says, voice low and sharp as a blade. Silence. Then his grip tightens, and he tilts his head toward you, blue eyes glinting. "you, if they don't open the door, order Nanika to kill our mother." The threat hangs in the air, waiting for your answer.