The Name of the Traitor is Beautiful

This story is based on the Traitor Theory of My Hero Academia. This reconstructed timeline takes into account several clues provided by the fandom. While it may not be wholly accurate, it does present one possible scenario.

Year 1, Semester 1, Lower Secondary, Nagano Kibohoshi Junior High School

"Before we begin today's attendance, class, we have a new student joining us this year. She's from the Mie Prefecture and I want you to provide her with a warm reception. State your name, please."
"M-my name is... Uraraka Ochaco. I'm very pleased to meet you. I look forward to working and learning together this year."
"If you would provide for the class the spelling of your name."
"Of course..." "It uses the kanji for 'back' and 'day'."
"Thank you, Ms. Uraraka. You may take your seat. There's an available one next to Mr. Kyūmoji. Now, when I call your name, please state your attendance. Hirano?"
"Here."
"Torimura?"
"Present."
"Katagi?"
"Here."
"...Toga?"
"Good morning, teacher!"

As lunchtime began, Uraraka found herself confronted on all sides by her fellow classmates, wanting to share their lunchtime. She thanked them, but asked for quiet today. She was feeling under the weather, and promised lunch times throughout the week in exchange. As the class grouped up in cliques, the student named Torimura approached her. She recalled he was the class president, despite his off-kilter appearance. He had no thin-rimmed glasses built for a savant. No finely manicured fingernails. His uniform had creases in the pant legs, he tanned easily, and his hair was even near his shoulder. Still, he had a certain aura about him that commanded attention, unlike Uraraka's thick-rimmed glasses and untamed bob.

"Are you available to talk, Ms. Uraraka?"
"Oh, h-hello Torimura. What can I help y-you with?"
"I just wanted to, on behalf of Class 1-C, welcome you to Kibohoshi Junior High. I hope you don't mind, but I decided to pick up some papers in the teacher's lounge for you. All new students are required to fill these applications out by the end of the week, and I expect nothing less from you. They're pretty simple. Mainly medical records, goals for the upcoming year, potential clubs you wish to join, and Quirk identification confirmation."
"Oh, wow. Um... thanks, Torimura. I'll be sure to get these back to you. En-enjoy your lunch."

The class president left Uraraka to her lunch, joining the student named Kyūmoji and someone she didn't recognize. Just as she was opening the bento her mom provided, another student walked up to her desk. The first thing she noticed was the student's black hair. A hime cut, paired with hair buns willed to stay in place by hope and too many hairpins.

"Heya, Uraraka! Name's Toga Himiko, but everyone in the class calls me Himiko. I saw you sittin' here, all alone, so I thought I'd keep you company. The class says it's because you're under the weather, but that hasn't stopped me before. And, between us, I think you're just nervous."
"Oh... okay. I mean... I'm a bit nervous."
"See? Can't fool me. Tell ya what. You entertain me for this lunch period, and I'll leave you alone for the week. Deal?"
"Sure."

Uraraka grabbed at the side salad as her new lunch companion grilled her with questions. Her favorite color was pink, favorite subject was English, favorite food was mochi.

"So, what's a girl from Mie want out of life in Nagano?"
"Well, my family... we moved for my Dad's job. He works in construction, and his company opened up a new office. He's working on the high-rise project in Hōsu, I thi-"
"YOUR DAD OWNS THE KYORAKA GROUP?"
Uraraka flailed her arms. "Shhhh! Not so loud! He doesn't... he doesn't own the company. I think he said he's an employee shareholder."

"Still, that's super cool! He probably is up on the latest trends, jet-sets across the country, and even hangs out with the Hero Association to test building materials! Right?"
"Toga, it's not that glamourous. He's there for ribbon cutting ceremonies. He closes deals. He invests. It's all... I don't know. Simple."
"Maaaaan." Toga slouched back into her chair before launching on another tangent. "So, did you get your Quirk yet?"

Uraraka, taken by the sudden tonal whiplash, choked on a piece of her omelette. She instinctively shot her hands in the air, as her mother said to do in this situation. The class, having heard Toga's outbursts, started to giggle at Uraraka's reactions.

"What *cough* what made you ask that?"
"Because EVERYONE in the class has one. For example - Torimura? That kid can summon a colony of birds to his command with just a few words. Just a few words! And Hirano has this thing called Smoothing? It's like a super buffer that 100% smoothes out a surface. So, what's yours?"
"...gravity."
"Come again, sunshine?"
"... Zero Gravity."
"Wait, so you can move things with your mind? That's so cool! We're learning about gravity in the science lab starting this semester and it's all ab-" Toga's excited face fell stoic. "Show me."
"What?"
"Show. Me."

Uraraka, having just about enough of her lunch companion, concentrated on her chopsticks she had just set down. Placing her fingers together, she visualized them lifting off the box lunch and lightly into the air. As the familiar waves of focused energy radiated from her fingerpads, the utensils began to vibrate. Toga was dumbstruck by the display. "Whaaa?"

The chopsticks floated temporarily in the air before dropping fast as the heavy feeling of nausea set in. Uraraka grabbed her head, feeling the strong migraines that accompanied her power. The sudden change made Toga reach out instinctively. "Hey Ura-chan, are you okay?", but her concern was met with a recoil.

"Sorry, ah. I get lightheaded sometimes." The intensity began to subside. "Don't call me Ura-chan."
"Uraraka, I'm so sorry. If I had known your power would make you sick, I wouldn't have asked. Still, I think it's cool."

The lunch bell rang again to signal the conclusion of the break. As she packed her lunch into her bag, Uraraka came to a sudden realization.

"Toga? Did you forget to eat lunch?"
"Hm? Oh no, no. I just forgot it today."

The sun was deep in the sky when Uraraka, tired and listless, drudged out of the school that day. She had to stay after to clean the classroom and even longer to fill out even more forms for her transfer. She hoped the train was on time when she bumped into a fellow student. It was her Class 1-C seat neighbor Kyūmoji.

"Did you enjoy your first day of 1-C, Uraraka?"
"Uhm...yeah. I had a decent enough time. Torimura seems amicable enough... and... oh, thank you for the help with algebra."
"Sure, sure. Listen. I know Himiko can be a bit overwhelming."
"Toga? You can say that again."
"So here's me advice. Stay away from her."
"What? Why would suggest something like that?"
"Because she's a bit of a freak. Did I say a bit? I meant she's not fit for our class. She gave you a migraine."
"C'mon, Kyūmoji. I always get migraines when I use my Quirk."

A shadow cast across his face. "So, it's like that, huh? She's also mentally unstable. She got held back a year. She doesn't have a Quirk yet." He started to gesticulate and move his arms like a preacher. "Does that sound like someone you should be hanging out with? Most of us have been trying to saddle her out to 1-D where she belongs with the rest of the flunkies. I'm just saying... be careful around her. If you know what's good for your own future."

Uraraka, rightfully petrified at his tone, unenthusiastically nodded and ran out of the school grounds. She was still hoping her train was on time, Toga in the back of her mind. She can't be that bad. Can she?