The Stinky Sister Actually Looks Down on Me Only to the First Degree?

I came to the new world and worked hard to fight monsters and upgrade, but I encountered a system bug that kept me stuck at level one. I was teleported to the next mission point. I met the swordsman sister who was attacked by pigmen. When she saw that I was only level one, she asked me to run quickly. As soon as I took action, I used full-level fire magic to burn all the pigmen in the blink of an eye. The swordsman sister was so scared that her legs went weak. Who is the monster? ? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.