If you let the fly live, the spider will die,
You can't save both without one suffering.
You can't save anyone,
... without being forgotten
Is she a female Walter from hellsing and like Lubba from akame ga kill?
I fight sometimes to my classmates (boy) using myyyyyyy FIST
I don't think an attack like that could actually HARM Korosensei. Even Karma had to fool sensei to hurt him. If she swiped her hand just like that, he would have been able to dodge because he moves at Mach 20. Seriously.