Akuyaku Reijou wa Danna-sama wo Yasesasetai - Chapter 110

In that life, Fan Qingyao was the daughter of a famous family, the successor of a miraculous doctor, and her medical skills were superb. But she poisoned the traitor Zhongliang, considered the thief his father, and threatened her relatives to seek power and seize the throne for him.

The whole family of my grandfather died without any body parts, and my brother was burned into a handful of ashes. Having been drained of all her value, she was thrown into the cold palace and died tragically under the boning knife in his hand.

When she opened her eyes again, she was back to when she was ten years old. People are still the same people, things are still the same, but Fan Qingyao vows to turn things around!

For her seriously ill mother, her wasted sister, and her nameless brother, she wanted to personally find happiness and health for them, and a bright future ahead of them.

Stepmother who dominates her mother’s status, since you love money, I will keep you in poverty for the rest of your life.

Partial father, if you like power, I will ruin your reputation!

You scumbag who deceived her, you love the throne, I will let you watch others sit on that chair!

My sister with a hidden smile, everything you like, I will crush it to pieces in front of you with my own hands!

In this life, relatives must be protected and enemies must be fought. Of course, revenge is not avenged in a day, and the road is not completed in one day.

However, as this road of revenge continues, one more person appears out of thin air! Your Highness, could you please give way?

- Description from novelbuddy

After being set up and killed by her half-sister whom her ex-boyfriend had cheated with, Mu Siyin woke up one day to discover that not only was she alive, but she had traveled back in time to 2 years before her death.

Chen Sansi traveled back to the chaotic end of a dynasty, thankfully with the hardworking system by his side. He originally wanted to hunt to earn money and someday go to the Martial Arts Hall to learn some basic fist and foot techniques, aspiring just to be an ordinary rich man. Yet, fate had other plans. With officials imposing heavy taxes and the Martial Arts Hall bullying the citizens, he had no choice but to enlist in the army to survive, becoming an archer. From “archery (entry-level),” he worked tirelessly up to “operating a ten thousand weight bow, where arrows cannot be dodged,” taking the heads of enemy generals from a hundred miles away! From “basic soldier’s spear technique,” he worked tirelessly up to “National Guardian Dragon Spear, growing more valiant with each battle,” standing firm with a spear on horseback, alone turning back the Enemy Army of a million! Years later, Chen Sansi, having campaigned in the south and battled in the north, was truly invincible under the heavens, commanding two hundred thousand of the Iron Cavalry. Watching his subordinates forcibly ascend him to the throne and become emperor, he felt quite helpless: ’You... you have really caused me trouble!’

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.