How you gonna scare someone with that?
They would think they were on LSD in some sort of anime.
They would expect you to bust out some biography shit after you pull it out like "I was born on the streets. After my mother and father died I was left to raise myself aqnd develop my own set of skills to survive in order to get by in the harsh reality of poverty."
*chinky face*
"Ehhhhhh?"
"Yes. I will use this. I will not hesitate. There is no fear in my heart. Years of fending for myself have developed me into a capable fighter and warrior with the ambition to take the title of Grand Master. After I take this final key from you"
*Wide american roundeye*
"Ohhhhh!"