I Am Loaded with Passive Skills - Chapter 45 - He’s Hopeless

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.

She was a medical expert, talented and beautiful. She was reborn as his little wife. Her in-laws did not like her, her husband did not love her, and she was as timid as a mouse. She was weak and easy to bully.

Su Qiuge transmigrated into a novel and became the villain’s cannon fodder younger sister who was constantly courting disaster.

Not only did her brother dislike her, but she also offended her brother’s sworn enemy, the male lead.

After she transmigrated, Su Qiuge decided to curry favor with the male lead so that he would abandon his plans of revenge against her. She wanted to transform her cannon fodder fate and became an obscure passerby in his life instead.

Her plans were going smoothly, until one day she saw the aloof and cold male lead staring at her with a terribly dark gaze full of possessive desire.

Su Qiuge:?? Male lead wake up! I’m the cannon fodder!

Later she realized that the male lead who seemed like a good student was actually black-bellied and full of unspeakable intentions towards her.

She, a 21st century mercenary queen, had crossed over into a tragically betrayed body of a waste. Waste? She will show them what it means to be a waste! Betrayed? With the Ancient Manual in her hands, she will astonish all the despicable men and cheap women!

Wait! Didn’t everyone say that she was an evil woman which everyone feared? Why is his Third Highness, full of mystery and charisma, so interested in her?

- Description from Novelupdates