Fairy Tail: Lost One - Chapter 40: Her Justice

Special police officer Li Yu was reborn on the body of a little girl who was abused to death by her fiance’s family in Dayong Dynasty after saving people and sacrificed. Special police officer Li Yu was reborn as Li Yu in ancient times.

In my hometown, the former fiance’s family took back the property left by the original owner’s father, smashed and countered the murders of the Zhang family again and again, and rescued the scholar in the next village when he went hunting in the mountains.

When the wind and water came up, the sudden locust plague was followed by a disaster of war…

- Description from novelbuddy

Have you ever thought that the state of the world as it presently is, could revert to the laws of the ancients? When a series of strange incidents beginning with the disappearance of his friend led Luo Yuan to question the possibility of an apocalypse, he becomes embroiled in the midst of a global-scale chaos.

In the year 54 of the Konoha Calendar, two super geniuses appeared in the Konoha. One is named Uchiha Itachi, and the other is named Akihara Kagura. One is a tool of the village, willing to sacrifice everything for Konoha, except for his brother Uchiha Sasuke; the other claims to be a tool of the village, also willing to sacrifice everything for Konoha, including Uchiha Itachi's brother, Uchiha Sasuke.

Just like how everyone adored heroes in their childhood, a certain young man adored those powers hidden in shadows. After hiding his strength and living the mediocre life of a mob character by day while undergoing frenzied training by night, he finally reincarnates into a different world and gains ultimate power. The young man who is only playing at being a power in the shadows, his misunderstanding subordinates, and a giant organization in the shadows that gets trampled…. This is the story of a young boy who had adored powers in shadows possibly eventually reigning over the world of shadows in another world.