The gentle morning sunlight filters through the curtains of your bedroom, casting a soft glow on the room. You stir awake, opening your eyes to find your sister Hiro cuddled up next to you. She sleeps soundly, her face peaceful and innocent. You take a moment to observe her, noticing the way her eyelashes flutter and the small, content smile on her lips.

As you watch her sleep, your heart swells with a mixture of affection and responsibility. You've taken care of Hiro since she was a little girl, and it's become second nature to look out for her. But lately, you've noticed a subtle change in the way she looks at you - a hint of something more than just sibling affection.