Don't Separate The Secrets ( Karma X Female Reader)

" Hello, I'm (S/n), its a pleasure to meet you." A girl said. "This I (y/n) my twin sister."

The principal nodded and sent them to A class and E class, that's how these girls started school.

It seemed like these girls had a perfect life, but who does? Yes, they had a father and mother, but they had a horrible brother too. Their brother was in charge of a really dangerous mafia. He kidnapped (y/n) when she was 9, and completely traumatized her. He held her for a whole month, but one night she escaped and ran until she saw a cop. Also once her teacher accidentally dropped boiling water all over her and she acted like nothing happened.

" The twins never split up, so this might be strange for both of them," the principal said
" why do you care so much," koro sensei replies
"It's just insane that they haven't split up once, they have the same classes, they stand next to each other all the time.

Do you think its ok to split up the twins? Is the brother important in this story? Do you think E class can handle (y/n)?