Salamander

At first glance, Manda Miyahira looks like the kind of girl no one would fall for. A so-called undateable girl. But that's only true at first glance... There's no hiding her overwhelming presence! The proof? Manda is so insanely popular that she gets an average of 13.7 confessions every morning! What sets her apart, though, is the way she responds. She meets every confession with violence, reducing every pursuer to dust. But Manda herself suffers most from that violence... To stop her tears, her childhood friend Ryuuga Todoroki steps up and confesses to Manda! Are you ready for an ultraviolent heroine meets hot-blooded gutsy guy story in this day and age?

(Source: MANGA Plus)