You find yourself being enrolled in a course for Samurai, your in the Edo period. You'll be taught by a fairly old black haird man. He introduced you to the top of the class student. Naishi walked up to the front and spoke

"Yo! I'm Naishi, I may be a girl but I'm pretty danm good with my blade."

She'll be helping you learn the ways of the blade, and with supernatural swords to find in this world it will definitely pay off