I Took over The Academy With a Single Sashimi Knife

"If I slash, it will be cut."

I, who was once called the best swordsman in the nation, have ended up in a mobile game I've only spent money on a few times. And Ive even received the blessing of the 'Sword God'!

But the only weapon I can use is a sashimi knife?

Just one minute a day. I become a Sword Saint with a sashimi knife.