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Katsuki was mad. No, mad didn't cut it. He was fucking furious, his palms cracking with mild explosions. He slapped the locker closed, closing his hands. The bastard with the tail and the one with too many fucking arms couldn't shut the hell up. He glanced at Izuku, taking note of his trembling hands while trying to open the buttons on his shirt.
"I can't believe how hot she is, none of the other girls have the spark she has" tail bastard said, zipping up his jacket.
"I mean, she is pretty, but-" Katsuki didn't wait for him to finish, turning around to face the two bastards, ready to start throwing fucking punches .
"She's hot! There's no other way to put, I think I'm going to talk to he-" Katsuki blinked, surprised.
Izuku had one hand around the tail bastard's throat, the other sparkling with green energy. The bang of the body being smacked against the locker echoing around them, making everyone stare at the scene. Katsuki strode forward, palms cracking with small explosions.
"Shut it," Izuku growled, eyes shining dangerously "don't you dare disrespect Mayumi like this, and don't you ever talk about her ever again!" Izuku pushed the idiot against the locker, making another loud bang travel around the room, and let go, stepping a little to the side so Katuski was by his side.
"And who are you to tell me what to do?" The tail bastard spit, hand rubbing the front of his throat "If I want to I can tal-"
"The hell you can," Katsuki cut in, voice dangerous and eyes shining with fury "You don't get to talk about our fucking girlfriend this way, you fucking asshole" the explosive teen let a mild explosion go off in his palm, turning around to glare at every single boy in the locker room "anyone has anything to say? Huuh!?"
The locker room stayed eerily quiet, and one by one the boys finished changing, avoiding the two very pissed off teenagers. Katsuki grunted, sitting down on a bench to tie his shoes. Izuku was by his side, pulling up his uniform pants and then sitting down, pulling his red shoes on.
"That was so manly!" A too fucking cheerful voice called, making both boys look up to a beaming redhead "You both are so manly !"
"The hell does that mean?" Katsuki raised from the bench, flexing his arms on his sides, hands already heating up just in case .
"Oh, you two defending your girlfriend! I want to be friends with you two!" the boy smiled even wider, offering his hand to Katsuki "I'm Kirishima Eijirou!"
Katsuki eyed the hand offered to him in disbelief, looking up again and raising an eyebrow. Did this boy not see that he made fucking explosions with his hands? Was he dumb?
"I don't think you want me to shake hands with you," Katsuki eyed the boy's hair, styled in spikes up his head, and added as an afterthought "Shitty hair."
"I think I would be fine, bro!" the overly excited redhead exclaimed, still holding his hand up "and what's wrong with my hair?"
"It's shitty," Katsuki shrugged, but took the boy's hand and shook it anyway "why would you shake a hand that makes fucking explosions?"
"Because of this!" Katsuki watched as the other boy took his hand of his own and slapped two fists against each other, the skin on his arms looking like fucking rocks "my quirk is called 'hardening', not very flashy but I can take a lot and not even feel it!" he grinned again, looking towards Izuku, who was still silent, sitting on the bench, blinking at the interaction, and Katsuki could almost hear the damn nerd's thoughts about the quirk "and you are..?"
"Oh!" Katsuki rolled his eyes when the nerd jumped out of the bench, blushing, hands flapping in front of him "I'm Midoriya Izuku! I'm Kacchan and Mayumi's boyfriend! Your quirk is so cool !" he blushed even harder at this, a few of the boys glancing back at them.
"So manly!" Shitty Hair said again, smile huge on his face "And thanks, bro!"
"That's so cool!" a blonde boy with a black stripe in the form of lightning walked closed to them, smiling wild "So you both date each other and the girl with the wings?"
"Hm, yeah?" Izuku looked over Katsuki for help, but only got a snort in response, as if saying 'you messed up, you deal with it', "we know each other since we were babies, and we have been dating for a while now" he rubbed the back of his neck, suddenly self-conscious.
"Don't start thinking too much, nerd" Katsuki slapped the back of Iuzku's head without any real force behind it "if those extras have something against it they can shove it up their asses!"
"I think it's cool, man!" the blond said again "I'm Kaminari Denki, by the way!" he waved at the three boys, smiling.
They continued to talk between the four of them, another boy walking close to them while they were going to the P.E. grounds.
"I'm Sero Hanta, I'm just curious..." the other boy spoke, smiling sheepishly "Don't get me wrong, but you two seem really... possessive of your girlfriend, so how come you two share?"
Katsuki stopped. Blinked. Looked at Izuku, who had the same expression on his face. He felt his palms heating up again .
"We... don't?" Izuku started, still looking confused "we date each other, too. Actually, we started dating before she figured out her feelings, so... we don't share? None of us, no even Miichan. We're not jealous of each other, and we have always been together, so not being together feels wrong, and she's so amazing and gorgeous, and Kacchan too! He's so gorgeous and amazing, and they're the best , also the-"
"Rambling, you damn nerd" Katsuki grunted, feeling his cheeks warming with the praise, bumping his shoulder against the smaller boy's "also, fuck off, soy sauce face. It's none of your fucking business!"
"I didn't mean to be rude! I was just curious. I've heard about polyamorous relationships before, but I have never met someone who had one!" the boy, who had black hair and funny elbows, put both his hands up as if surrendering.
"Polyamorous?" Izuku asked, face contorted in a confused expression.
"Yeah!" the blond boy said, happy, bouncing on his feet "My parents have one! I have two moms and a dad, that's why I thought it was so cool that you two are so happy and secure about your relationship! Totally awesome!" Katsuki thought he didn't mind the blond boy so much, smirking at his dumb thumbs up pointed at him and Izuku.
"So manly, bro!" Shitty Hair said again, smiling wide.
"Kirishima!" They all turned around at the sound of the redhead's name, and Katsuki saw the other two boys stepping a little to the side, the blond one explaining his parents' relationship to a very focused Sero.
Katsuki grinned at the sight of his girlfriend walking beside a pink haired girl, with pink skin and yellow horns. She was talking with Mayumi, who seemed comfortable enough by the girl's side. Which was new, girls usually got into Mayumi's nerves, or went to her to try and get to Katsuki, or to bully her about not having any friends who were girls, and sometimes a mix of all of those. She didn't get along with the girls back at their old school. So if this pinky girl was being nice to his girlfriend he could tolerate her, and she seemed to know the redhead. Yeah, he could tolerate these two, and possibly the blond one too. He wasn't sure about the one with black hair, though. He would have to get to know him a little better first, and if he didn't ask anything stupid again he could consider having him around.