Bog Standard Isekai - Chapter 48Book 4.

In a modern world where cultivators need a place to cultivate or vent their boredom, there are private businesses that set up instance dungeons with the aid of technology and cultivation magic to enable cultivators to train and commoners to experience the life of cultivation. They are called dungeon suppliers.
Xie Jin's one and only dream was to be a dungeon supplier and when his only relative passed away, the relative's inheritance gave him a plot of land and surprisingly, a 'System' Module which the relative had previously used.
With the help of the system, Xie Jin decided to pursue his dream of becoming the number one dungeon supplier.

The Empress does not grant my resignation.

fake good teacher

“Lay the foundation”

“Experience Yourself”

“Practical Comprehension”

“Flower Sakura? Bullying? Cough, you are still…”

really good teacher

“Learn the flow of cherry blossoms with one stick! 》

“Two sticks realize the hegemony! 》

“Three Sticks Awakens! 》

“What famous teacher Rayleigh? Bah, that’s called a misunderstood child! Preaching and teaching depends on our teacher Kai!”

“Good news! Good news!”

“Mr. Kai’s cram school is open!”

“Package teaching package meeting, places are limited, first come first served!”

Keywords: One Piece, Kaido, Cute, Teacher Kai

- Description from novelbuddy

A tale of an ordinary senior high school student who becomes a legend by dispensing plagues and controlling vicious virus insects.