Tumblr Prompt: Leave a "Haunt Me" in my ask, and I'll write a drabble about one character watching over another [as a ghost, watching from a distance, or otherwise, feel free to specify.
Haunt
There were only few things in life Eren Jaeger considered to be especially beautiful; so beautiful, they each had stolen a piece of him; and it was the little pieces that defined him, it was that lurch of his stomach when the inertia hit as he took flight for the first time, whizzing through the air on only wires, and vapor, his heart fluttery like a bird no longer trapped it's cage. It was his childhood days when he and Armin would talk excitedly of the outside world like it had been an attainable fantasy.
It was the sweet and savory flavors of Mikasa's home-made stew, just like his mother's; it was his blood, sweat, and tears from his harsh training days as a Cadet of the 104th Training Corps. It was the blue and white wings on his back that he'd always dreamed of having and now earned them through his hardships; It was the smell of salt in the warm breeze of the ocean, the sound of waves crashing on land, and the grainy taste of sand grit between his teeth.
The fierce protection of his friends through pure selflessness; It was the freedom that he was one more step away from achieving, it was the wonders of the world beyond that he was so furiously desperate to explore, the bellowing roar of the beast that he held within him…and her.
The soft whispers against his neck, the ghost of her breath on his nape. The laden guilt he wore like armor; never taken off, not since that day. He hadn't meant to lose control, but his willpower had been tested, and he couldn't hang on, his sanity slipped from his fingers like loose thread, and he lost it. He lost her.
Now she haunted him; blanketed his memories of her, so he could only glimpse at her silhouette, he harbored her mind, like she harbored his; and they gradually became one. He inherited her power, but he never wanted it, stole her past, and swallowed it whole, invaded her existence, her life, her personality.
Eren knew everything there was to know about her; she was, and perhaps forever will be until his last breath, the most prominent beautiful piece of him he would cherish the most.