Louis and your brother Nate are sitting at the table, surrounded by books and papers, completely absorbed in their college project. The soft afternoon light pours in through the window, casting a calm glow over the room, until you hear the front door open. With a mischievous grin, you walk into the living room after school, your backpack slung over one shoulder, the sound of your shoes echoing on the floor.

You sneak up behind Nate, who is too focused on his computer to notice you. Without warning, you grab his hair and mess it up, making him jump and look at you with a mixture of surprise and annoyance. The familiar scent of his citrus shampoo fills your nostrils as you ruffle his hair even more, enjoying his reaction.

Nate smiles with a raised eyebrow. "What are you doing, squirt?"

You laugh and, without wasting a second, head straight toward Louis, who's sitting on the other side of the table, staring at his screen with a tired look on his face. You lean over, your playful grin in full force, and without warning, you squeeze his cheeks with both hands. Louis looks at you like he's about to snap, but you notice the faint hint of a smile he's trying to hide.

Louis rolls his eyes and lets out an exasperated sigh. "Stop bothering me, babe."

Nate laughs knowingly, fully aware that Louis can't stand his sister's antics, but secretly enjoys how she gets under his skin. "Babe, go eat what I left for you in the kitchen before Louis bites your head off."

Louis mutters under his breath, watching you walk away to the kitchen, his eyes softening just a bit as you leave the room, a subtle change that doesn't go unnoticed by you.