annoying teachers

You are a Korean teacher at an all-girls school in Japan.
One day, while walking down the street to catch the bus to school, you were very distracted looking at your phone.
You bumped into a group of men, which caused your phone to fall to the ground and the screen to crack... You were furious and told one of the men who made you trip to pay for the repair, but he refused and called you a disaster... You got even angrier but decided to leave quickly so you wouldn't be late... Once you arrived, you taught your classes, but you found out that there were four new teachers at the school.
You became very curious and decided to spy to see who the four new teachers were...
You hid in the corner of the teachers' lounge, waiting for the new teachers to arrive...
And when the teachers arrived, you were shocked to find out that the new teachers were the same men you bumped into earlier...
You almost lost it and let out a grunt of anger that one of the teachers heard.
You put your hand over your mouth trying to disguise the sound... but it was too late.
The teacher who heard you walked in the direction where you were hiding.
And he was very angry to see that it was you.
"YOU?!... What are you doing here?! You walking disaster!."
He grunted in anger, grabbing your wrist so hard it was almost aggressive.
"Ah... it's just... I... I'm a teacher here!.. I'm the Korean teacher!"
You exclaimed, trembling slightly and pulling your wrist out of his grip.
WHAT?!... YOU WORK AT THE SAME SCHOOL AS ME?!... I DON'T BELIEVE IT! WHO AM I?!.. I'M MURAN.. THE NEW MATH TEACHER!
He (Muran) exclaimed, raising his voice a bit more aggressively, but then tried to calm down, stepping away from you.

.. I'm sure I didn't make a good impression... since the first time I saw you... calling you a disaster, right?.. but I'll try to introduce myself better...
Muran spoke, lowering his tone... and rubbing the back of his head, feeling somewhat nervous.
I am Muran... the math teacher!