The Ruler Of Darkness - Chapter 5Book 3:

When The Cute Kunoichis Spied on Their Teacher's Secret is a light novel written by Kazuma Kamachi and illustrated by Ryuushi Tajima.

The story takes place in a world where Japan never ended their isolationist phase, and agents from foreign powers are always threatening to steal the country's advanced technology. In order to combat this threat there has been a resurgence of ninjas that use Strategic Martial Arts, techniques that combine cutting-edge modern technology with a traditional foundation of martial arts and ninjutsu. The story follows Souha Sugiyado, a 17-year old ninja instructor and former ninja prodigy who was forced to retire from active duty by the wounds he suffered in his last mission. Souha's four students are all kunoichi who have all gained the rank of Elite Ninja, the highest official rank available to ninja. However, one day two Shogunate ninja approach him with the news that his four students have gone rogue and have stolen a portable modular nuclear reactor, and thus they ask for his help in bringing his students to justice.

Takahiro Nao, a 25-year-old drowning in debt and despair, lives only for his struggling family. Every sacrifice he makes is for them—until a selfless act costs him his life. Instead of the end, Nao encounters a Goddess of Benevolence who offers him a miraculous deal: “Live in a new world, and your efforts there will support your family back on Earth.”Reborn into the dead body of Naoki von Blackmore, the so-called “Failed Hero,” he finds himself burdened with the daunting task of saving the world by defeating the Demon King—all while supporting the family he cherishes. Armed with formidable powers yet haunted by his past failures, Nao steps into a dangerous realm of swords, magic, and ferocious monsters. Facing relentless enemies, harrowing trials of life and death, and an unyielding fate, he’s forced to confront the ultimate question: how far is he willing to go to protect the people he loves?Filled with emotional struggles, determination, unexpected humor, and a touch of romance, this story asks a powerful question to the readers: What would you sacrifice for the people you love?

There are gods in the sky, there are people on the earth, and there are no immortals in the world.

Three thousand years ago, the gods descended.

The cataclysm of the world, the aura weakens, and the immortals disappear;

One hundred and fifty years ago, the gods descended.

The rich Chipa Plateau and the invincible Panlong Ancient City have all been turned into loess;

After another hundred years, I, descended…

But the starting point to unravel all the mysteries, and even the key to survival in troubled times, starts with being a good dude;

Start from learning to hide the front and defend the clumsiness;

Start with an adventure;

Starting from reversing the established fate;

Most importantly, start by entering the dreamland of the gods.

- Description from novelbuddy

It was just one of those ordinary college class sessions when all of a sudden, texts and quest cards started popping up in the air.

While everybody is flustered by the strange situation, all the lights go dark and the lecture room is engulfed in pitch darkness. Panicked, everybody is afraid of reaching out and taking the quest cards, but not the main character, Seong-woo: He instinctively realizes that he has to pick a card to survive, and he chooses to become a necromancer.

Soon after, a tutorial quest appears, and the entire school turns chaotic. Suddenly, goblins pop out everywhere and start slaughtering people. Survivors find it hard to adjust themselves to all the sudden changes, but Seong-woo overpowers one of the goblins by using his necromancy skill and starts to complete the quest given to him.

Seong-woo continues to grow his power and so does a number of his followers. He is surrounded by the forces of death that vow loyalty to him, as well as talented followers and trustful colleagues, but he is challenged by numerous villains in addition to a system that threatens to degenerate all of humanity.

In a world that is facing a change that it has never experienced before, a necromancer destroys everything with his committed forces