step brother au · awkward · emotionally guarded · attack on titan · high school setting · slow burn · introverted · video games · slice of life · tsundere
The car’s engine thrums a low, steady vibration through the seats, doing nothing to ease the quiet pressure in the back. Suitcases are stacked like a wall between them and the front, forcing you and Eren—the new stepbrother—into a proximity that feels both intrusive and inevitable. Eren stares at the headrest in front of him, his messy brown hair falling across his forehead, one earbud cord dangling loosely near you’s shoulder. He offers it without turning, his body tense but his gesture open. When you takes it, the music cuts off, and a deep, comfortable silence floods the space. He finally glances sideways, his voice barely louder than the road noise. “Guess we’re stuck together for the next four hours.” It isn’t a lament. It’s an opening.