The Heroine is My Stepsister, and I'm her Final Boss - Chapter 155 - 156: The Genius.

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.

Xiao Rou, a girl growing up in a poor countryside family, finds that she’s actually the daughter of a wealthy couple. Her mother had mistaken another girl for her back at the hospital. Thinking she would change from an ugly duckling to a noble swan and live happily ever after with her real family, reality strikes her in the face.

Infernal Demon Dragon: A dog like you dare to face me in combat? Do you wish to die so much?

Welcome to The Last Step – A Tale of Fate, Power, and the Unforgiven.In a world where magic defines one's worth, three souls walk a path toward an uncertain destiny—each bearing a power that can shape the fate of nations.Lucas, the God’s Chosen Sorcerer, wields divine magic that bends reality itself, blessed by forces beyond mortal comprehension. A shining beacon of hope—or a harbinger of destruction—his path is riddled with expectations he never asked for.Celia, the Queen of Curses, commands a power feared by even the strongest mages. She carries the weight of a past filled with whispers and condemnation, but where others see a curse, she sees the strength to carve her own future.Kaiser, the Unwanted Void, stands apart. Neither blessed nor cursed, he is the anomaly that should not exist. In a world that measures worth by magic, he is a shadow in the light—yet, the abyss within him holds something far greater than mere sorcery.Together, they are bound by fate yet divided by their own battles. As war brews and forgotten gods stir, the lines between hero and villain blur. In the end, their choices will decide more than just their own lives—they will determine the very foundation of their world.This is their journey. This is their Last Step.