The Academy’s Time Stop Player - Chapter 146

A boy from 21st century Earth, met an accident and later was reborn in Naruto’s Ninja World.
He is born in Uchiha Family and becomes the useless brother of Itachi Uchiha and Sasuke Uchiha…. Let’s see how he changed the Naruto world.

- Description from Novelupdates

This red dragon came from the vast wilderness, coveting all the powers of the world. He has held countless titles: Mountain Fury, Purgatorial Calamity, Red Emperor, Ember Dragon…The world trembles under the shadow of the great dragon. He ignited the surge of the magical industrial revolution. In the empire he established, wyverns roar, cannon fire resounds, steel behemoths appear in the sky and on the earth, and disasters from other worlds run rampant.“Submit, or die.”Cassius spread his sky-shading wings, looking down upon the trembling humans, elves, and dwarves beneath him, and spoke thus.………A story of a red dragon with a built-in player template conquering, ruling, and transforming another world.(Pseudo D&D, Fourth Catastrophe, Red Dragon, translation )

To treat her sick brother, she was forced to marry him in place of her cousin, who was disfigured and paralyzed. At first, their relationship was purely transactional, with neither caring much for the other. But after going through a lot together, they fell in love with each other. He doted on her deeply.She was considered an ordinary person by the world, but it was later discovered that she had multiple identities - a mysterious underground boxing champion, a highly-skilled doctor, and a mysterious and renowned composer... He also realized that their fates had been intertwined long before they met.

In the end, war couldn’t be extinguished. But, there was a transformation. Even in the heart of a worthless accomplice in murder who was indifferently continuing his task, there was a transformation. The massive weapon “Object”.

This was a weapon that changed the whole definition of war. An exchange student named Quenser, who was dispatched to the battlefield, met at the base a girl with a strange aura. The girl, dubbed “Elite”, is the pilot of “Object”. The near future. This diminutive boy had come to take on the role of standing up against the strongest weapon “Object” for the sake of the girl. This was the motive for their first meeting.