My Hero Academia: Blood and Fire

Selene, Celestia, and Izuku found that literally every teacher in UA happened to be a Pro Hero, which made sense as soon as the siblings thought about it, and while many seemed to have specific roles in the school, normal classes they had to teach, each was ready to impart wisdom onto the class. Present Mic, for example, ended up being their English teacher, while the likes of Midnight, the R-Rated Heroine who seemed be playful and flirtatious at times, or even sadistic if she felt the need for such a thing, even though she was their Art History teacher. Then there was Cementoss, a hero whose power allowed him to manipulate concrete, who taught Modern Literature, while their normal Heroics teacher was Snipe, a cowboy who doubled as a sniper, hence the gun he carried as part of his costume. The siblings even found that their Math teacher was a hero called Ectoplasm, who was capable of making copies of himself by releasing streams of ectoplasm from his mouth, showing all of them that UA intended on shaping all of them into great heroes, and Selene realized that the same had to be true for Class 1-B.

Even the chef in charge of the cafeteria's food was a Pro Hero, Lunch Rush, whose Quirk allowed him to make delicious and tasty food, while also catering them to each specific student's needs, so he could tell what allergies they had and ensured none of them were in danger.

The siblings were impressed by how much UA was putting into just their teachers and the facilities, ensuring that those who were chosen to be students were smart and intelligent, and they even made sure that their students had the best possible teachers to learn from. It made their first day rather interesting when each of them thought about it, even though Izuku did have to go to Recovery Girl for his broken finger, who was surprised to see him so soon after the year had started, and once their day was over the sisters started to head home. In that moment they discovered something that made them happy, as the gravity girl, Ochaco Uraraka, caught up with Izuku and was even joined by Tenya, even though Ochaco revealed that she adored the insulting name that Katsuki gave their brother. The reason why became known in no time, she liked it more in the sense of that 'Deku' meant 'never giving up', causing Izuku to rub the back of his head, though Selene and Celestia could see that he was trying to embrace the insult in the new light it had been trust into.

The following school day was more of the same, they went about their classes, Aizawa didn't have anything insane for them to do, and the siblings were able to simply enjoy their day while some of the teachers were simply surprised by how smart the sisters were, and it wasn't until the afternoon that things changed.

"IT'S ME! I CAME... though the door, like a normal person!" All Might stated, wearing one of his older costumes, the 'Silver Age' costume that had the same red, blue, and white color scheme as all of the others, save for the icon on his chest being more circular than what the others had, plus the golden boots and gloves, and he entered the classroom through the door, making Selene wonder why he felt the need to announce it.

"I still can't believe it. We're going to be taught by All Might himself!" the red haired boy commented, as it was one thing for a class to be taught by a bunch of Pro Heroes, something he and many of the other students were still getting used to, but for them to have All Might, the Number One in the entire country, the Symbol of Peace himself, was something many of them weren't expecting at all.

"Foundational Hero Studies... for this class, we'll be building your hero foundations through various trials... and to start us off we'll be focusing on the 'Trial of Battle'." All Might stated, where he made a few poses while he talked, which seemed to be part of his theme, or at least Selene thought so, and when he saw how excited they were the hero pulled out a clicker and the wall to his right, to the left of the seats, opened and revealed a number of suitcases with numbers on them, which were linked to the seats that each of them were sitting in, "And, to go with your first real battle, we've prepared the gear that we had you send in the requests for, the battle gear that match your Quirks and even enhance your various powers."

Selene and Celestia glanced at each other for a moment, as they knew their mother had put forth the effort to make all three of them her own suits, but she had only been able to make one for Izuku, which meant that they had their own special cases for their unique battle gear. With that in mind they collected their cases and followed the others to the changing rooms, as everyone was to change into their hero costumes and then report to one of the battle sites so they could tackle whatever lesson All Might had in store for them. Izuku's was basically a jumpsuit with a mask added to it, plus some gloves and boots that he had made to fit the costume, even though he also had a pair of 'ears' on it that matched All Might's hair, not that the sisters were surprised by this discovery. The sisters found that some of the others were really just new clothes that didn't do much to make them look like heroes, Katsuki looked like he was going to murder someone, Tenya and the navel boy were decked out in armor, grape haired boy looked like he was part of a bowl, frog girl was a frog, and so on.

When it came to the sisters, however, Izuku and the others were surprised by their decisions, as Celestia had gone with what appeared to be a mix of armor and a princess' attire, making her look like a warrior princess, which had been designed to resemble scales, like it was made out of dragon scales. In addition to that her gloves and boots were golden colored, in fact the same was for the collar area of her neck, and resembled flames, and they found that when she summoned her wings or tail the armor moved over it, causing Izuku to see her as a princess of the sun. Selene, on the other hand, had gone with a mix of things, as her costume was light armor that seemed to mimic chainmail, though in the form of a short shirt and a pair of shorts, with a silvery blue color that mimicked her and Luna's shared past. There were black wild markings on her attire that represented her Tiger Quirk, making her look like a warrior goddess of the night or even a warrior of the wilds, which was what Selene was going for, and much like Celestia she didn't bother with a mask.

Selene did note something interesting about her sister's decision, as it seemed like part of Celestia's attire was inspired by Daybreaker, who Celestia shouldn't know about, but at least everyone else assumed that they were like princesses, one that represented the day and the other that represented the night.

"Now then, I'm sure all of you are wondering what we'll be doing today, so let me tell you: we'll be doing indoor battle trials." All Might stated, while at the same time he walked down the street that was behind them and brought them to an area that had a number of identical looking buildings, no doubt enough for the class to be evenly split into two groups, or at least into ten groups if one didn't count Selene and Celestia, "As you know, villain cleanup is usually seen out in the open, so the public can be assured that we've done our job... but statistically speaking, the better part of our job is done indoors, since villains like to plot and scheme in the shadows. For this trial we'll be splitting you into teams of two and then divide those teams into 'hero' and 'villain' groups, for a team battle type of trial... in the case of Selene and Celestia, we'll have both of you draw from the lots once the various groups have been chosen."

Following that All Might explained what was going on, the villain groups would be tasked with guarding a 'nuclear bomb', or at least the form of such a device since having one here would have been outrageous, and what worried Selene was that he was reading from a slip of paper. The goals were simple, the hero teams either had to restrain the villains to claim the core before time ran out, while the villains had to keep the core away from the heroes or even capture the heroes before running out of time, a rather simple goal when the students thought about it. Tenya, of course, was confused by all of this and Izuku understood the challenge immediately, as sometimes heroes were forced to make impromptu alliances with other heroes, some they might not know the abilities of, and this was to help them learn such a skill before they enter the field. The rest of the students seemed okay with this set up, since learning how to be a hero was why they were here in the first place, which was why everyone was eager to line up and draw their lots to see who they would be paired with.

Izuku, against all luck, was paired with Ochaco in Team A, B was the red-white haired boy with the wing mutant, C was grape boy with the smart girl who agreed with Aizawa the previous day, D was Katsuki and Tenya, much to their shock, and so on through the rest of the class, as most of the match ups didn't seem impressive, and it wasn't long before the sisters had to draw their lots.

"Selene, you are assigned to villain group D, and Celestia is in hero group A." All Might said, causing the sisters, Izuku, and even Katsuki to glance at the icons for a moment as they understood what was going to happen next, while at the same time all of the other students were surprised by this discovery, since the sisters were usually seen working on the same side, even if it was to help Izuku, "The villains will start inside the building, giving them time to come up with their strategy, and after five minutes have passed the heroes will be sent in to start the test."

Selene tuned him out for the most part, she couldn't bare to listen to All Might for more than was absolutely necessary, but she did understand that they were allowed to use a certain level of their power, as too much would require their teacher to call it off, as he'd be watching from cameras, and it wasn't long before she, Katsuki, and Tenya were placed inside the tall building that was their 'base'.

"Spill, shitty kitty! You knew fucking Deku had a Quirk the entire time, didn't you!?" Katsuki stated, already forgetting the fact that they were supposed to be villains right now, working as a group to protect a common interest in the form of the 'bomb' Tenya was standing near.

"Katsuki, if Celestia and I knew our brother had a Quirk, we wouldn't have needed to protect him from you... nor would we have been surprised when he flattened that Menace earlier." Selene replied, though at the same time she shifted her stance as her allies found her shifting into her hybrid form, because her focus was on the trial that would be starting soon, her mind full of ways to try and win this, as their opponent was a problem, she still didn't know how to beat Sunshine, "I hate the fact that I'm even saying this, but Katsuki, this is the one time I'm allowing you to go after my brother... and not in the 'murder' way you're known for. Our best bet is to divide our enemies and take them out, or at least keep them away from the core so we can win, so you need to keep Izuku busy, while Tenya and I will stay here and guard the core."

"Sounds like a good plan... I do have a question though: how do we bring down Celestia?" Tenya asked, as he approved of this plan and already had an idea on how to counter Ochaco, which would allow them to eliminate one of their foes, and if Katsuki was able to actually keep Izuku away that only left Celestia, the one he was the most worried about.

"That's the funny thing: you don't." Selene remarked, as that was the honest and terrifying truth for her allies, that while this trial was happening while the sun was up it didn't matter if it was six in the morning or four in the afternoon, Celestia would have access to Sunshine as long as the sun remained in the sky.

Sure enough Katsuki didn't even wait for them to finish making their preparations, he was going on the assault and would no doubt attack the others once they arrived, to which Selene helped Tenya clean the area so they eliminated Ochaco's Quirk in it's entirety, since this would leave her with nothing to use her Quirk on, save for herself. The five minutes went by fast for the pair, since they had spent some of their time preparing, and Selene wasn't even remotely surprised when she felt their building shake as Katsuki tracked down and assaulted the group that no doubt entered the building. Tenya checked in and found that she was correct, the explosive boy was focused solely on Izuku, something that meant Ochaco would be able to just slip through the net and get to them, though just as Selene intended it seemed like Celestia had split away as well, likely on their brother's wishes. Both Izuku and Katsuki were willing to blow this entire trial to bury the hatchet, or at least Selene was sure that such a thing was going through her brother's mind, though she was focused on the true danger, her sister, as she was the one she needed to focus on.

While she thought about that Tenya started muttering to himself, trying to envelop himself in the essence of evil, and even tried to be a villain while they were standing there, and his earnest showing caused Ochaco to reveal herself as she laughed at his desire, letting her and her teammate to realize she was nearby.

"We knew you would be coming, Ochaco, especially with Katsuki tearing the entire building apart, so we prepared for your arrival." Tenya said, though at the same time he found Selene nodding to him, she was planning on using his speed and her own power to their advantage, and while he was annoyed by the idea of working like a villain, ganging up on a hero like this, he knew it was important, "Here we come, 'hero'."

Ochaco barely had time to realize what was going on as Tenya rushed her, his Engine Quirk allowing him to cross the entire distance between them in a few seconds, and when she tired to dodge she found that the sapphire serpent of Selene was wrapping around her, pinning her to one of the pillars before retreating as she found that the capture tape was coiled around her and the pillar.

"There, one down." Selene commented, which was when the entire building shuddered, Katsuki likely firing off one of his far stronger blasts, confirming that he had a very short temper right now, and she imagined that All Might, being the crappy and inexperienced teacher he was, might be allowing the exercise to continue in the face of this discovery, "Now, where might we find Celestia?"

Selene and Tenya barely had time to react to what happened next, it just seemed so absurd, as the group erupted as part of the building was pushed upwards into the air, causing her to realize that Izuku had unleashed the power of One For All, and as she looked down into the massive hole, she found two things. The first being that Izuku must have been told where his ally was and made sure to avoid hurting her with his attack, while the second thing was that Katsuki had done a number on her brother, something that caused her to growl for a moment. The following moment happened to be when she found both herself and her teammate being knocked to the ground, just in time to see Celestia fly in and knock them both down before they could react, and as they were knocked down she created two orbs of solar energy above them. It was checkmate, she knew it and Tenya, despite clearly glancing around for a time, knew it, they were bested, Celestia had played them both into thinking that she was moving around the inside of the building, but in reality she knew their brother more than Selene did and had been expecting her brother to do something incredibly stupid.

It stung, it really did, that Celestia had bested her again, just like she bested her all those years ago, and All Might declaring that the hero team had won was like a gut punch, but as her sister dismissed the solar orbs, however, Selene found new determination to move forward, she would use this defeat to push herself towards being a better hero, and as she freed Ochaco Selene had to wonder what the rest of the day had in store for them.