The Max Level Hero Has Returned! - Chapter 171

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.

One day, the stuntman found that acquaintances and unfamiliar people were looking for him through various channels. Even someone from a certain department of the country came—

Team Leader of an abilities group: Comrade Jian Hua, on behalf of the nation, I want to tell you about a newly discovered world secret.

Protagonist: What?

Team Leader of an abilities group: In fact, our world is a book.

Protagonist: WTF?

Team Leader of an abilities group: And you will be the last villain of the seven volume novel series.

Protagonist: …

See title for the protagonist’s mood.

Book Character A: You and I are good childhood friends. Shouldn’t I be the white moonlight in your heart?

Protagonist: …

Book Character B: I treated you kindly, so shouldn’t you trust me completely?

Protagonist: …

Book Character C: I’m so considerate while busy. As good friends, shouldn’t we be rolling around on first base?

Protagonist: …

See title for the protagonist’s mood.

- Description from Novelupdates

Ye Chu is a miserable supporting character from a novel (she transmigrated).

She’s the most famous socialite in Shanghai, but her existence was to emphasize the magnificence of the white lotus female lead.

In the previous life, Ye Chu died in an accident. After rebirth (still in the novel), she didn’t only want to get revenge, but also change her fate, allowing every side character to have the opportunity to shine. Ye Chu and Lu Huai are a fake couple in their previous lives but reunited in this life.

They probed each other at every turn and slowly got closer to each other. They two fell for each other and confronted their enemies together.

- Description from Novelupdates

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.