She Belongs To Me! [Yandere Black Buter x Reader]

Prologue

A/N: (Y/n), Izuku, and Shoto's hero costumes! Art is not mine!

(Y/n) Bakugo, a name that circulated around the school despite her young age. With only being 16, she had made a name for herself. As the most explosive hero, both literally and figuratively, known mostly for her unruly personality. She is also known for being in multiple villain attacks and even being kidnapped by said villains.

Speaking of villains, currently, she's on a mission to capture a villain with two of her classmates. She wore her all-black hero costume, with a few orange colorations mixed into it. To cover her identity, she wore a hood, that was attached to the costume. Unfortunately, she had no clue that it just made her look extremely cute instead of striking fear.

Next to her are her teammates that will be working with her. Izuku, who she continuously calls Deku, and Shoto, who she calls Icey-Hot. Like her, they had changed their hero costumes, both having hoods to cover their identities. She almost believed they were copying her style, mostly Izuku, who looked the most similar to her own.

"Aren't you excited (N/n)...? We're finally going on a mission together!" Izuku muttered with a small smile. "Eh? Why would I be excited?! I can do this alone!" (Y/n) spat angirly. Now, despite her few years in UA, her personality has only slightly diminished. Of course, this does not stop her from being a complete asshole to anyone and everyone.

"I for one am excited" Shoto spoke, cutting into the conversation. "You don't look excited" (Y/n) pointed out, having always seen Shoto with a monotone expression. In turn, Shoto gave her a small rare smile, to counteract her point, hoping to get her to blush. On the contrary, (Y/n) couldn't care less if he smiled at her or not, so she only let out an annoyed "tch".

Izuku silently chuckled at Shoto's failure, earning a glare from the male. This did not go unnoticed by (Y/n), although she doesn't care she's not stupid. Recently, ever since they graduated their first year in school, she's noticed her classmates and friends have been acting off. This also includes some teachers, which she constantly refused to acknowledge.

Impatiently, (Y/n) picked up her pace, wanting to get the mission over with. The two followed after her, easily keeping pace with her long strides. Which soon turned into racing through the city while using their quirks, being mindful of any civilians. (Y/n) flew in the air with ease, using little explosions to boost her, while her two teammates are stuck on the ground.

This does not stop them from catching up with her, despite their disadvantage on the ground. With Izuku jumping from building to building, like a rabbit. And Shoto ice-skating his way across buildings, being mindful to melt them, leaving nothing behind. Thanks to their fast movements, they had gotten to the villains in record time, as they had just stolen from a bank.

Stupidly, (Y/n) had come in full blast towards the villain, aiming to tackle him from the air. "(N/n)! Wait!" Izuku called out too late. In an instant, a strange-looking portal appeared in front of her. With wide eyes, she could not stop her movements as she flew through the portal. Maybe she should've read up on the villain's quirk before going in head-first like she always does.

Once she had vanished so did the portal, leaving her trapped where ever she was sent. Instantly, she was sent tumbling to the ground, being spat out from a wall. Quickly getting her barring, she raced to the closing portal, only for it to completely vanished. "Damn it!" (Y/n) cursed as she placed her hands on the wall, glaring holes into it.

Thankfully, she is in an alleyway, so no one witnessed her tumbling out from a portal. Having no other choice, she stomped her way out of the alleyway. In an instant she got stares from civilians, taking note of her strange attire. Of course, (Y/n) sent them a scary glare, instantly forcing them to look away.

Unknowingly, she so happened to be next to the Undertaker's shop, with a specific Earl standing in front of it. They, along with everyone else, had noticed the strange person. Watching as the stranger looked around, looking lost, with a glint in the Earl's eye, they made a command. "Sebastion" with just one word, the demon knew what to do, with no questions asked.