Unbreakable | Steve Rogers Fanfiction ✓

Summer Stark never asked for power.
Lightning struck, the sky cracked open, and something ancient woke up inside her. Strange energy burns beneath her skin-wild, uncontrollable, and tied to a cosmic force she doesn't understand.

But she hides it.
Because being Tony Stark's little sister is complicated enough.

Thrown into the chaos of SHIELD, the Avengers, and every threat that follows, Summer learns to stand beside legends-while trying not to become a weapon herself.

Then there's Steve Rogers.
A man out of time. A man of impossible ideals.
A man she only meant to tease...

Steve Rogers X OC💙
Slow-Burn 🔥