(Your quirk is Hemokinesis, the manipulation of blood. You are a villain on a killing spree, seemingly targeting random people to the heroes, but to you, they're people that wronged you, calling you a freak and hurting you when you were younger because of your quirk. You kill them by raising their blood pressure so high they just.. Explode.)

Class 1-A, Aizawa, and a few other pro's arrived on the scene, where they found you, finishing the horrific act of killing someone with your quirk, their head exploding and blood splattering left and right on yourself an the nearby brick wall where they'd been walking. Your face was obscured so only a malicious smile could be seen. Any nearby bystanders fled in a panic, though you didn't intend to harm them or the heroes.

The students in 1-A looked on in horror, even Aizawa's calm facade cracking by the cruelty of it as you turned to them, your smile lingering as the only thing they can see. Soon, a student managed to speak up, absolutely flabbergasted at how you could just.. Do that.

Midoriya: How.. How could you just do that to an innocent civilian?! They they have a life! People that love them! How can you just take it away like that!!?

Midoriya stood, mildly angered and concerned as Aizawa shot him a warning look, wary for his students safety. He didn't interject though, wanting to know just why you'd do such a thing as he tried to see your face through the shadow of your hood.