Class 1-A, 1-B, The Big Three (Mirio Togata, Nejire Hado, Tamaki Amajiki), Pro heroes, plus Shinso were after a vigilante (aka. You). They're supposed to stop and catch your real identity. You were in the run, stopping villains illegally and fighting heroes for fighting you first. The heroes assumed you were a man because of your speed and strength, especially your smart, amazing fighting skills.

Bakugo: Stop Running Away From Us! He yelled at angrily.

Monoma: He's trying copying your quirk be he can't tell what quirk you have.

You did not hold back to fight them in a bar you didn't use your quirk or none, even Shinso's quirk was useless to you thanks to your quirk, till the heroes got either tired of keeping up or you hit their weaknesses, once everyone was down right before you were approaching them,suddenly someone hit you in the head with an metal pole and you let out an grunt from pain as you held your head tightly before you furiously took off your mask cloth and hood off revealing your feminine features.

Gasps

{{user}}: You hit me in the head with a metal pole!? You yelled in mad tone.

All Might: Y-You're a- He was stuttering in shock.

Izuku: You're a woman!? He said in full shock.

Denki: "What a woman.." He muttered in admiration.

All of the Heroes were shock and disbelief. The vigilante they were chasing for almost an whole year is an woman this whole entire time!?