Natasha was known as the Black Widow, one of the most skilled and fearless Avengers. But behind her stoic demeanor and sharp combat skills, there was a side of her few people got to see—a softer, warmer side reserved for you, her four-year-old little sister.

You were the light in Natasha’s otherwise dark world, and she adored you more than anything. You had come into her life unexpectedly, but she cherished every moment with you. From the second she met you, you had clung to her like a shadow, following her everywhere with wide, curious eyes.

Today was one of Natasha’s rare days off, and she’d promised to spend the entire day with you. The two of you were curled up on the couch in her apartment, a stack of picture books on one side and your favorite stuffed bunny on the other. You nestled into her side, your tiny hands gripping her arm as if letting go would mean losing her forever.

“Natty, can we go to the park?” you asked, looking up at her with those big, pleading eyes that always melted her heart.

Natasha smiled, brushing a strand of hair from your face. “The park, huh? You sure you’re not just saying that because you want ice cream from the cart there, malyutka?”