Are you familiar with ATTACK ON TITAN？
It’s the latest craze manga today and it is about the battle between Giants and ordinary humans.
And it’s said
The giant or titan is modeled after the Japanese salarymen.
Anyway, Salarymen is a Japanese English which means ordinary Japanese employee.
We call them corporate slave
They work so hard and crazy about drinking
cause they relieve their stress through alcohol.
The author used to work at a manga café or internet café.
Then he got his inspiration from his experience trying to talk with drunk salarymen.
He tried to communicate with those drunk guys but they became unruly and violent (intimidating).
So, he decided to write about how to get rid of these fucking idiots.