A/N: I saw a picture someone drew of Eren and Mikasa in a Kyoukai no Kanata/Beyond the Boundary AU and I thought it was cute so I decided to watch KnK (I'm on the sixth episode now!) and then write something.
A figure stood at the roof of the school, staring off into space. When Eren squinted, he realized that he knew who it was. There was no mistaking the silky black hair, the pensive gray eyes, and especially the scarlet scarf tied around her neck despite the warm spring weather. It was Mikasa Ackerman, the student who had just transferred into this school a week ago. He had never spoken to her, had never gotten the chance. She seemed to be a lone wolf, sitting by herself in the corner and relatively quiet in class. Eren never pegged her to be the type of person to jump off of a roof but then again, it wasn't like he knew her. Had he taken the time to think, he probably would have called a teacher or told someone about the young girl about to jump off the roof. But this was Eren Jaeger, known for being reckless and impulsive, and his brain told him to run to the roof so run he did.
He ran as fast as his legs could carry him, cursing the stupidity of attending a school with multiple stories. He must have caught the attention of the few teachers and students that were still straggling around campus even though school had ended an hour ago. Perhaps he should have alerted his math teacher Miss Ral, who was surely staying after to grade the math exam they had taken just this morning, or maybe he should have texted Armin to get help but all he could think was, I need to get there before she jumps.
Eren threw open the door, nearly out of breath. He scanned the roof to search for Mikasa and he caught sight of her colorful scarf. She stood on the ledge of the roof, tips of her shoes hanging off the edge. She looked, as some people whispered in the halls, like an ice queen as she stood there as still as a statue. He couldn't see her face but he bet if she turned around she'd still look as calm and cool as ever with her face in its usual unreadable mask.
"Mikasa!" he shouted, stumbling towards her. He was still panting a bit from his run up the stairs. "I don't know what you're thinking but don't jump!"
His classmate turned and her face, as he had predicted, was void of any expression. She blinked her gray eyes at him and her mouth opened slightly. "Eren Jaeger," she said in that quiet voice of hers. He had to strain his ears to hear her. "I knew you would come."
"You…you did?" Stupid as this was, he couldn't help but blush. Maybe if that stupid Jean hadn't kept talking about how beautiful Mikasa was, what with her thick, black hair and her cool, gray eyes, he wouldn't be thinking about how particularly pretty she was at this moment and…Wait a second. "You knew I would come? What the fuck does that mean?"
She leapt gracefully off of the ledge onto the roof and took a few steps towards him. "I've been watching you and I've noticed something," she murmured. Mikasa began to unravel the bandage that Eren had never noticed was wrapped around her right hand. "Please don't move. This won't hurt a bit."
"What are you doing?" Despite her telling him not to, he took a few nervous steps back and gulped.
"There's something in you," she told him. Her eyes remained fixated on him, never blinking. "A horrible spirit. They possess people sometimes. They're called Titans. But I can stop that." The bandage fell from her hand and blood began to drip from a wound between her thumb and index finger. She raised her hand and the blood began to collect and take a solid form, the form of a sword. Mikasa waved her left hand and a opaque blue screens formed around them like a box surrounding the roof.
His eyes widened as he took everything in – her blood suddenly transforming into a weapon, the strange cage that surrounded them, and the fact that his classmate was about to attack him – and his mind raced as he began to find words. "You're -"
"A Titan Slayer, yes. So you know of my kind and the monsters we deal with," she said calmly, pointing her sword towards him now. "Good. Then you understand that my weapon will only harm the Titan inside of you and leave you unharmed." Mikasa swung her sword back and quickly thrust it into Eren's chest before he could utter a word.
He only had time to shut his eyes and flinch as the sword dug into his chest. A sharp pain burst through his body and he groaned in pain. He clutched at where the weapon entered his body, trying not to cry out even though it was painful. Eren took deep breaths, trying not to focus on the sword sticking through his body, and slowly looked at Mikasa who was now staring at him with wide eyes.
"That's…why…" she stuttered. Now she was the one backing away from him. "The Titan. It never left your body…I don't know…"
Eren gave her a twisted grin and made a move to walk towards her but winced when another sharp pang hit him in the chest. "I'm half Titan, actually," he said, laughing weakly. "And kind of immortal."
"Immortal?" she echoed.
"Yeah. So could you take your sword out of my body now? I might not be able to die from it but it still really fucking hurts."
If you think I'm going to write a part 2 you would probably be right. Sorry if this is a bit short though.
As always, thank you so much for reading/reviewing/following/favoriting!
