DOMINO EFFECT (My hero academia)

In a world where good and evil measure their strength, there are always traitors, but who is it this time?

"Expose the traitor" - this is the assignment Scarlett receives. Under the guise of an ordinary exchange student, she goes to UA Academy. But her lack of experience as an agent, family secrets, and her own insecurities prevent her from achieving her goal. Thus, one fatal mistake triggers the "domino effect."