AI Doctor : From Slave to Beast King - Chapter 40: Impert Snakes

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

Monica Everett, a genius magician, was extremely shy and terrible at speaking in public.

To that end, she worked hard and mastered the art of countless magic, which she could use without chanting. After being chosen as one of the Seven Sage at the tender age of fifteen as the “Silent Witch,” she lived a quiet life in the forest.

However, two years have passed since then, and one day, Monica received an order.

And it was to secretly protect the second prince to the academy undetected.

In order to protect the prince, Monica must infiltrate a glamorous school for the children of noble families.

“I don’t wanna do this… I’m scared… Ugh… My stomach is aching…”

…said the girl whimpering.

I don’t know why I die, I don’t know why I live.

Divided hunters die of loyalty,

The witch who plays with emotions dies of love,

Cautious fortune-tellers die of trust.

The thief who steals everything has nothing,

The visionary who created everything never existed.

The traveler fell on his way home,

The twilight giants rest before dawn.

Lawyers sacrifice for order,

Judges forget the law.

The sleepless sleeps in the dark,

The corpse collector lay in the coffin.

We are guardians, and a bunch of poor creatures who are constantly fighting against danger and madness.

This journey is life and death.

While drowning was inevitable, they had struggled.

This is the worst of times, this is the best of times.

- Description from novelbuddy