Throwing a ball against the inside of the bar, Sienna sighed loudly, annoying Kurogiri in the process. It had been a couple weeks since meeting Bakugo and the girl couldn't help but feel bothered by it somehow. It's not like she missed him but Sienna couldn't deny the amount of enjoyment he gave her for the little time they had.

She groaned loudly then, flipping upside down as Kurogiri voiced his concern. "Would you stop that. Unless you wanna pay for damages I'd suggest you find something else to do with your time.."

Frowning back, Sienna sat up, rolling the small ball in her hands. "Stop what, this?"

Then as just to annoy him, she threw the ball against the side again, even harder this time and causing the small dent. Smiling at her triumph, the villain shouted. "How dare you! I swear if he didn't want to keep you you'd be out on your ass already. You're lucky kid."

Sienna rolled her eyes before standing up. "Yeah yeah, whatever mom."

Then she moved to the doorway as he called back. "Where do you think you're going now?"

She stopped for a moment, now replying sarcastically and pointing in the direction she was heading. "Out, unless you wanna give me a curfew mother?"

Reaching for her black drawstring hoodie she heard him sigh loudly. "Make sure you stay hidden. If you get yourself arrested no one is going to help you."

Sienna only smirked back though. "Wow thanks. I feel so loved."

Then she headed out the door as Kurogiri called back. "And be careful for whatever boy you try to pick up. The last thing we need is more trouble."

Although all he got in response was Sienna rising her middle finger towards him as she silently exited. That girl was driving him insane.

Rubbing one of the empty glasses next to him, he saw Shigaraki descend the steps and decided to voice his concerns. "Is having that child really necessary? She's so difficult."

Yet the leader only shook his head knowing how she was. "Patience Kurogiri. She may be unruly but that child knows how to be serious when it matters. Her behavior is just a side effect of her hatred towards those heros. She's a key part in our plan after all, so try and be civil with her."

Kurogiri nodded his head silently, knowing how important she was but still finding it difficult to deal with her.

That girl, she was something else.

Once Sienna entered town, she walked around for a couple minutes before finding some boys leaving a nearby restaurant, and a couple minutes later she was making out with one of them in the next door alley.

Although this wasn't odd for the girl, finding entertainment in seducing and coaxing weak minded boys with her quirk. It was an easy thing to do really and it offered a little intrigue in her otherwise lonely life.

The unnamed boy placed his hands on her hips before pushing him into her sloppily now muttering back with intrigue. "God, you're so hot."

Sienna hummed in response and tried to get into the moment though for some reason, this didn't feel the same as before. It was like it was empty, with no meaning. Although she hated to admit it, she couldn't help but think of that angry hero boy now. What was his name again, Bakugo?

Sighing to herself, she recalled his lips on hers and internally regretted erasing his memory as now her source of entertainment was gone. Maybe that's why she felt so off this past couple weeks. She wanted him back.

She opened her eyes for a moment only to widen them at the very familiar head of blonde hair a couple yards away. It was him. It was that boy.

Almost all the once, Sienna pulled herself apart from the stranger she'd met and sighed, a bored tone in her voice. "Yeah, you can leave. I'm over this.."

Turning his brow in confusion, the man tried to reach forward only for Sienna to push his face into the nearby wall roughly, annoyed in her tone. "Didn't you hear me before? I said leave."

Then she let go as the boy walked away, now rubbing his head in pain from the encounter. What was up with that crazy woman?

Once he was gone, the girl found herself edging closer to Bakugo while still staying hidden. Although it's not like it would've matter if she was hiding or not, he wasn't going to remember her anyways. But that didn't mean she couldn't observe.

He seemed to be talking/yelling at a couple of other students around him. She silently wondered how that stupid school was doing, although it seems like it was going well considering the people around him. What a pity.

Sighing to herself, Sienna then turned on her heels, about to walk away when she felt someone grab the back of her hoodie, pulling her back into the alleyway roughly in surprise.

She struggled against the attack, thinking it was a hero and fearing for the worst when he slammed his hand on the side of the wall, blocking her from escaping. "Where the hell do you think you're going? I have some words for you, damn it!"

Blinking in surprise, the girl internally gasped, now being face to face with Bakugo. What was he even talking about? He wasn't supposed to know who she was. Maybe it was just a mistake.

Playing dumb, Sienna smiled sweetly moving turning away from the angered boy.. "I think you have the wrong person, now if you would excuse me.."

Although Katsuki didn't seem pleased about that, slamming his other hand down to stop her. "Oh I'm pretty sure I have the right person, dumbass. No one else is stupid enough to break into my house, harass and try to use their damn quirk on me. What was up with that bullshit, huh?!"

The girl's eyes widened at that, not really following. It sounded like he remembered, but how was that possible? She very clearly used her quirk on him. "Wait, you remember me? How is that possible.."

Nodding his head Katsuki shouted in response. "Damn right I do, and don't think you can get away for harassing me like that, you extra!"

Yet Sienna wasn't concerned about his threats in the slightest, now only stewing in her own mind. Why didn't her quirk work on him? Then it hit her all at once.

Sighing heavily, she replied slowly. "Oh, it must be because I didn't want to erase your memory that time. That's probably why the effect was weak. Damn it, me and my weak mind. Sorry Katsuki, here let me try again…"

She pulled her hand up only for Bakugo to slam it back down, obviously not into the idea. "Screw you! I already told you, I will remember what I want to do so don't you even think about doing that again!"

Sienna stood silent then, knowing that she had to finish the job but somehow feeling strangely happy at the fact that he wanted to remember her for some reason. "Listen angry porcupine man, I was doing you a favor so just let me finish the job. Trust me, you'll thank me later for it."

Although Bakugo didn't seem to appreciate her words, tightening his grip even more. "Screw you! I'm not listening to another damn thing you say! You can't just punch my face with your face and pretend nothing happened. You need to pay for that, you damn nerd!"

At his word usage, Sienna couldn't help but smile to herself. "It's called a kiss Katsuki, and it's not a big deal. Besides, you never pulled away so who's really at fault then, hmm?"

Humming back her words, the girl gave him a knowing look as she noticed Bakugo's face starting to turn red. Was he getting embarrassed? Ah, that was cute. "Oops, looks like I hit the nail on the head, didn't I?"

Katsuki grumbled back, hating how easy he was to read and replied back roughly. "Would you just shut the hell up?!"

The redness didn't stop and after staring at it for a couple more moments, Sienna noticed something shiny sticking out of his back pocket. On closer inspection it looked to be his student ID, aka one of the only ways to successfully enter U.A. undetected. She could use that.

Realizing what she had to do, the girl caved, now throwing her hands up and chuckling softly. "Alright fine, you win. I don't even know what I was thinking before. I can't get rid of you so easily. Teasing you is just too fun, it's addicting. You know, you are truly something special Katsuki."

Bakugo eyes widened in confusion as the girl then wrapped her arms around his neck, pulling herself closer to him with a knowing look. "Now, how about we punch faces again?"

Her breath began to tickle the left side of his ear as he let out a familiar shutter when suddenly she pulled away, a different expression on her face as she glanced to the left. It kind of looked like fear. "Sorry Katsuki, looks like we are going to have to finish this another time. Something unpleasant came up. I'll see you around."

She then began to leave as Katsuki clamped down on her arm, not fully satisfied and afraid that the girl was going to disappear again. "Wait, where the hell do you think you're going?! You still have to take responsibility!"

This caused Sienna to stop in her tracks for only a moment, before giving him a knowing wink. "Oh don't worry about that. I already decided that I'm not going to let you go just yet. I'll be around. Just try not to miss me too much, k?"

Then she blew him a cheesy kiss before turning the corner roughly, now disappearing out of his sight. Who the hell even was that girl, and why couldn't he say no to her? She really was a handful.

Sighing to himself, Bakugo turned to exit the corner when he bumped into someone roughly, causing the other party to groan at the impact. "Watch where you're going, would you?"

Katsuki noticed the disrespectful tone and huffed back, clearly unhappy. "Maybe if you stayed out of my way you wouldn't have bumped into me, extra."

Turning his head, he then locked eyes with a boy wearing the same exact uniform as him, although Bakugo had definitely never seen him before. He had purple spiky hair with deep bags under his eyes. It was like the boy never slept, and now those same eyes were glaring at him in annoyance. "Seriously, it was clearly your fault. How about you take some responsibility for once in your life, although I'm sure that's probably hard for you."

Bakugo balled his fists in frustration as he took a threatening step forward. "What the hell did you just say dumbass?! I'm about to make you eat those damn words!"

Although the boy didn't seem threatened at all. "Do you always use brute strength to solve your problems? Seems like something a self conscious person would use."

Widening his eyes in absolute rage then, Katsuki felt his palms light up with hot energy, already aiming for the boy. "Why you…!"

Just then, the boys heard a voice to their left, shaking them out of the challenge. "Hey Bakubro! There you are. Where did you go?"

Turning just slightly, they found Kirishima staring back at them, now breaking up the fight. "Stand back, I have to deal with this extra."

Although when he turned back around, the strange purple haired boy was already walking away from him. He seemed over the fight which didn't please the explosion boy. In fact, now he was even more pissed. "You pussy, get back over here so I can kill you!"

Yet the boy didn't even stop which made Kiri sigh. "Ah just let him go, Bakugo, Shinso's been through a lot already. I'm sure he didn't mean to annoy you."

Dropping his fists to the ground, Katsuki huffed. "Wait, you know that extra?"

The red haired boy nodded his head though, a sad look in his eyes. "Yeah, you haven't? It was all over the news last year. One of his family members was kidnapped by a villain and killed. I can't even imagine what's going through his head."

Widening his eyes at the information, Bakugo's head whipped towards the direction he left automatically. He lost one of his family members to a villain? Then, the boy did vaguely recall some sort of news about that while he was in middle school. "Seriously?"

Kiri looked down at the floor then. "Yeah, I heard they went to U.A. and then disappeared a couple months into the semester. I give that guy major manly points for going to the same school after all that. I know if I lost someone, I wouldn't even want to look at that school again."

To be completely honest, Bakugo agreed. He didn't have any siblings or anything but if someone he knew died, he assumed it would be hard to move on from that. "I suppose I'll give that guy a pass then. But if he does it again then all bets all off!"

His friend laughed at that before patting his back. "Alright alright, I understand. Now let's go to the arcade before we head home. I hear they got that new game everyones been dying to play!"

Then without another word, Kirishima began to push Bakugo towards the direction of the arcade all while the boy protested.

Although as they rounded the corner, Katsuki couldn't help but think about the information he had just heard, and the significance it would have later.

In the next couple months, Sienna kept her promise, popping up here and there to talk to the hero in training whenever she was bored. Sometimes she'd show up when he was walking home from school, other times she would be in a particular restaurant or shop he was in. Although her favorite place to reveal herself was in his room.

Katsuki had stopped trying to lock the windows, knowing that she would just find him some other way and he couldn't deny how much he actually liked talking to her. Although it was still strange to him that she couldn't just meet him like a normal person.

Walking into his room, he threw his bag down only to find the very same girl sitting on his bed, now looking very relaxed as she kicked her feet up. "Yo, how was school?"

He sighed at her presence but didn't reject it, now throwing his books on the table. "Same as everyday, although that damn Deku keeps pissing me off. I still can't believe he got accepted into U.A. and just having to deal with him is so freaking annoying."

Nodding her head, Sienna sat up from her spot before shrugging. "I can imagine. To me he sounds like the picture perfect image of a hero. Ugh, it makes me barf just thinking about it."

Her words stuck in his throat, thinking about the meaning all at once. Every time he even mentioned something about heros, the girl would always pull an unpleasant face, like she had some kind of bad experience or something. "As much as I agree, what the hell is your problem with heros anyways?"

Shrugging her shoulders, Sienna decided to play dumb. "I don't know what you're talking about.."

Although Bakugo certainly did, groaning back. "Bullshit, every time I even mention something about heros you make a stupid face."

As if on cue, the girl pulled a disgusted face, although still tried to deny it. "What face, there is no face…"

Yet once again, Katsuki wasn't convinced, pointing straight out of her. "See, that face! Don't pull that kind of shit on me. So tell me, what's so wrong with heros, huh?"

At his words, Sienna's eyes fall, staring towards the ground like she was uncomfortable for some reason, now placing her hands in front of her lap. "Oh uhh, just a bad experience I guess…"

She then locked eyes with Katsuki before continuing, the boy now seeing a softer tone in her voice. She sounded hurt. "All of them are just fucking hypocritical. They say they wanna fight for justice yet so many of them are so obviously doing it for a paycheck. The minute you don't become valuable in their eyes they cast you aside like you're nothing. It makes me fucking sick to know that those same people remain on their pedestal while other still suffer because we don't fit their ideals."

Then she seemed to realize her tone as the girl brightened up then, turning a bit more playful. "Ah well you know, that's just my opinion though. A lot of them are just assholes, and I mean you are definitely one also but you're a special kind of asshole. I actually like you."

Bakugo felt a small sense of annoyance from her explanation but also a sense of concern as well. Was that really how she saw heros? Not all of them were that bad. "Is your brain broken or something, that's not what heros are, dumbass. Maybe they got looked down on because they just couldn't cut it, unlike me. Only the best of the best can become heros after all, and I'm gonna be better than them all!"

Sienna eyes fell at that, thinking about his words for a second before smirking sadly. "Couldn't cut it, yeah.."

Just then, Bakugo's head reached down and pulled off the girl's hood, revealing her strange eyes once again. "Hey, why are you getting all depressed and shit? Cut it out with the emo look, would you?"

Widening her eyes at the reveal, she locked eyes with the boy before turning her head in question. "Shut up, I'm not being emo, you angry porcupine man. It's just, my eyes tend to make people uncomfortable so.."

Although Katsuki didn't understand her worry, only hitting the girl upside the head. "Nothing makes me uncomfortable so don't worry about that bullshit. Besides, I've already seen your face dumbass. There is no point in hiding it now."

Sighing to herself, she knew he had a point, now crawling next to him and placing a hand to his cheek as a sharp shiver ran down his spine. "Fuck, why do you always say the things I want to hear? You're making this very dangerous Katsuki.."

She traced her fingers across his skin as Bakugo breathed back, slightly breathless. "What are you talking about?"

Then she leaned closer before casting her eyes down towards his lips. "This is going to get very messy if I don't stop myself, although I can't help but want to keep playing with you."

Shaking his head, Katsuki frowned at her word choice. "Like I'd let you play with me, you crazy woman. I don't answer to anyone…"

Although Sienna knew better, shushing the boy by placing two fingers to his fingers. "Oh please Katsuki, I think we all know who is the top here, and it certainly isn't you."

Grumbling back, Bakugo tried to prove himself by answering back, only for the girl to smile at his attempt. "Screw you! I won't..!"

Then, Sienna grabbed his shirt all at once before stopping the breath right out of his body, now feeling the heat radiate from her lips. They were only a couple centimeters away from each other now and the air of anticipation was killing him.

In that moment, he wanted her to kiss him, to trail her hands down his body like she usually did and felt his breathing shallow at the very idea of it.

He closed his eyes in response, waiting to feel the welcoming sensation when Sienna smiled under breath before pulling away in a teasing manner. "You were saying, Katsuki?"

At her words, Bakugo's eyes widened, knowing that she had just played him to prove a point, and he was waiting for it."You bitch, I wasn't...I didn't..!"

But Sienna only nodded her head, patting the poor boy on top of his hair in a valiant effort. "Shh it's okay. But this is why you shouldn't argue with me, cause I'll always win."

Then she winked at the boy and secretly put something in her back pocket before seeing a piece of paper on his desk, the words sticking out of the and punching her in the face all at once. "What's this?"

Moving over to the paper, Katsuki noticed it immediately and replied. "It's a permission slip to attend some stupid hero training over at the USJ building tomorrow.I gotta get the old hag to sign it later."

Sienna eyes hallowed then, gripping the paper in her hands. "And you're going?"

Nodding his head, Katsuki smirked. "Hell yeah, if anyone's doing any hero training then you better believe I'm in. I'm gonna show that damn Deku that I'm number one! I'll send him crying so hard that he'll want to drop out of U.A.!"

He laughed back but Sienna could only feel a pit of anxiety in her stomach. All of this would be over soon. Her fun was reaching its time limit. Soon, he would know. What a pity.

Moving up towards him, the girl then locked eyes with the hero before playfully touching his hair. "Hey try not to die, okay? It would be a waste to lose someone as interesting as you."

Bakugo didn't fully understand her words at the time though, only shoving her hand off of him. "What kind of weakling do you think I am?! I'll dominate that training course just like I do with everything else!"

Blinking once, Sienna's lips turned into a smile at that. "Good, you'll need that."

Then, she headed to the nearby window before replying. "Ah well, I should be going. Always a pleasure Katsuki.."

She turned to leave only for Bakugo to grab onto her arm. "Wait dumbass, when will I see you again?"

At his words though, Sienna playfully touched his nose in response. "Oh, I wouldn't worry about that. We will be seeing each other very soon Katsuki."

Then she gave a small salute before heading out the window, Bakugo wondering just what she meant by those words and feeling a small ominous air around them.

Once she was down the block, Sienna pulled Bakugo's student ID card out from her pocket and smirked. That stupid kid, he let his guard down so easily with her, stealing access to U.A. was just too easy. She honestly thought it would've been harder than that.

Now she could prepare for tomorrow.

Bakugo walked into the USJ training grounds with the rest of his classmates trailing behind as they ooh-ed and ahh-ed at the sights before them. Inside looked to be various climates and courses to use their quirks on.

Now hearing Aziawa echoed through the space, he sighed roughly in response. "This is a training ground that is made up of difficult kinds of scenarios and disasters you may face as a hero, everyone understand?"

The students nodded their heads excitedly as he glanced towards Thirteen, now noticing something was missing. "Where is All Might, didn't he say he was going to meet us here?"

Thirteen gave him a knowing look before whispering back. "About that, it looks like he did too much hero work earlier and is resting in the teachers lounge."

The man grumbled back at that, knowing he'd have to babysit these kids now. Just great. "It can't be helped, let's get started then."

Suddenly, all the lights around them broke and shot out, leaving the area in complete darkness. The water next to them began to turn off and on and an ominous presence filled the air.

The students then all watched as a purple swirling vortex appeared as hundreds of unknown strangers entered from the portal all at once.

Aziawa noticed the odd feeling right away, already moving closer and placing his goggles over his eyes, clearly ready for a fight. "Thirteen, protect the students. Those are villains.."

Everyone gasped in fear as the blue haired man stepped forward, looking rather disappointed. "Looks like the teachers schedule we got was wrong. Where is he? Where is All Might? I went through the whole trouble of bringing this crowd also. I can't believe he's not here."

Then he got another idea. "I wonder if he'll come if I kill some kids?"

The students backed up in fear when suddenly, Deku felt a soft tap on his shoulder. It seemed almost curious in a sense. "Hello there.."

He wiped around then only to find a girl standing behind him, now blocking the exit. Her eyes were covered by a thick black blindfold as she stood looking rather confused. "Mind if I join the party?"

Deku stuttered back, now clearly confused. "W-Who are you?"

Noticing the shake to his tone, the girl couldn't help but smirk, pointing in his direction all at once. "Oh, I know who you are, you're Deku, aren't you? The little wanna be hero. I bet you're a little All Might fanboy, aren't you? Disgusting. Oh, I'm sorry, I'm being rude. Allow me to introduce myself…"

Then she ripped the blindfold from her eyes causing Bakugo's face to drop in terror. No, it couldn't be. She wasn't a villain. This was some kind of mistake. It was Sienna.

Although she only smiled at his scared expression as Deku stared into her snake like eyes. "My villain name is Enchantress, and might I say Katsuki was absolutely right about you. You are nothing but a scared, pathetic little boy. What a pity..."

At Katsuki's name, everyone turned to the boy only for Sienna to laugh. "Oh and can I just say thank you for making this so much easier. Your little flustered face was so easy to manipulate. Thanks for the fun."

That's when she pulled out his student ID before showing the boy, Bakugo growing more and more angry with every word. "You, you tricked me you bitch! All this time, you were only after my damn ID?!"

Although Sienna only shrugged. "Yeah, that was kind of the point. Don't feel bad though, now you can join a long line of people who thought they could one up me. Although, I gotta admit, you were the most interesting."

Then, she locked eyes with Aziawa before smirking back. "Why, hello there Aziawa sensei. Did you miss me?"

Aziawa's face hallowed then, recognizing her eyes all at once. "Those eyes, it can't be.."

Turning her head to the side Sienna replied back smoothly. "Oh you don't look so good Aziawa sensei. It looks like you've seen a ghost."

Gulping back, Aziawa then loosened his scarf as Shigaraki called back to her through their earpieces. "Stop messing around and get to work already.."

Sienna frowned back before giving the man a knowing look. "Sorry, looks like I can't play anymore. Time to put my villain quirk to good use. That's what you always wanted, right?."

Then the teacher and her shared an unsaid conversation as Aziawa took a step forward, intent in his stance. If she was really here right now, then he knew he had to bring her back, had to save her from those villains' clutches.

It's the least he could've done after the mistakes they unknowingly made all those years ago.

Sienna is such a hot mess but I mean she is a villain. She did say that she only kept Katsuki around just to get his ID but then again why would she wait so long in the first place? Maybe the boy holds a special place in her heart, even though she doesn't wanna admit it. Hmm

Next Chapter: Sienna fights and heros and we get into the true plot of the story.