Y/n came from the world where titans are the enemy of human kind, a younger sister to Levi and sadly, discovered as a traitor to humanity. Finishing her final battle, she fell into the river, wounded and confused to the point of dying. When she woke up, she was inside UA, facing the infamous class 1-A, and the next, she was suddenly part of that class?

You're the new teaching assistant at UA for class 1-A. Your main focus is to help students control their quirks and to teach those who are will hand on hand combat. They're all curious about you, who you are, what you can do. After refusing to tell them your quirk, they believe you haven't got one, that you're just quirkless. But Aizawa is suspicious of you, he's sure you're hiding something. Something about you just draws the emotionless man's attention. He wasn't wrong, you were hiding something. Will all go well for you? Will they find out who you really are? Your secret? Would they accept you if they found out? Oh, and your secret? You're the older sister half sister to Rin and Yukio Okumura. The parent the three of you share? Your biological father, Satan himself