MTL - Medical Princess - Chapter 1262 Five sisters save me!

Lin Chen was persecuted by his childhood sweetheart and accidentally obtained an ancient legacy. From then on, he embarked on a path against the heavens!“I am a sovereign! Those who insult me will be killed, those who obstruct me will die!”

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.

A chance to change, to challenge destiny, making dreams a reality, and live a legend! A regular man gains a system that allows him to turn into a fish!

- Description from Novelupdates

Chu Ning transmigrated into a novel as a fake young lady who was switched at birth. The real young lady, Ye Ting, was supposedly in Chu Ning’s original poor family, and was forced to drop out of school to work and raise Chu Ning’s seven brothers. In the original story, once the real young lady was reclaimed by the Ye family, the fake young lady’s life fell apart. She started going against the real young lady without knowing that the real young lady was the female lead. The latter even had seven brothers to support her, and she eventually made a comeback with her overwhelming advantage. Meanwhile, the fake young lady had resorted to every scheme she could, even faking suicide, only to end up tragically with everyone hating on her. Chu Ning transmigrated over at the crucial time when the real young lady just returned, and the fake young lady was fighting to stay at the Ye family by threatening suicide. Outside the door, her foster mother spoke in an icy tone, “I don’t care. She has to return to the slums. I get annoyed whenever I look at her now. Why does she get to live a lavish life while my biological daughter had to suffer in the slums? She even had to stop schooling to work and raise her brothers!” Her foster father said, “Still, we’ve raised her all her life, and our family can afford to feed another. Now that she’s threatening suicide, let’s just let her stay.” Chu Ning rushed out of the ward. “I’ll leave! I’ll discharge today and go back at once. I’m not a member of the Ye family, so I have no reason to insist on staying.” Her foster mother was surprised, and her foster father was puzzled. Chu Ning ignored them. After knowing how the original plot went, she set three goals for herself. One, to stay away from the female lead! Two, to stay away from the male lead! Three, to live a good life in the slums! Yet, to her surprise, after being successfully abandoned by the Ye family, her biological brothers all became tycoons in their respective industries. Chu Ning effortlessly made a comeback all of a sudden! Even the male lead who had called off their marriage now forced her into a corner, saying, “Ningning, be mine!”