Jobless Reincarnation - Mushoku Tensei - Chapter 36: Children and Warriors

Fang Ze transmigrated to a world filled with superpowers and became a police. Initially, he planned to carry out his duties diligently. However, by chance, he discovered that his true identity was actually a criminal who had been arrested. The police faked his identity and made him believe that he was one of them. Then, they utilized his remaining memories to solve the case and identify his accomplices. They had set up a huge operation and were ready to capture him and his accomplices at any time! Fortunately, he acquired a superpower called the Midnight Investigation Room. At midnight every day, he could conduct an investigation on a chosen target. During his investigation, not only could he hear the actual thoughts running through the head of his subject, he could also acquire different items based on the value of the information he collected. Some of the items he acquired included: a mushroom that could sustain its host’s beauty forever; a credit card that allowed its users to loan from the future unlimitedly; a loyal assassin troop that lurked in the shadow; a demon eye that allowed its user to pry into the other world; a kobold that could learn and train with double efficiency on behalf of its master; seeds that could be attached to enemies’ bodies to make them puppets; and tapes that could transform human bodies into rocks when applied. In order to resolve his crisis, he collected information and investigated the case while improving his ability and expanding his influence. Unfortunately, he uncovered an even bigger scheme after solving his case. This entire world turned out to be a scheme! Many years later, Fang Ze sat on the throne of the King of Darkness. Accumulated beneath his throne were the countless skulls of his enemies.

A college student, accidentally reborn into the world of Naruto, becomes a member of Uchiha who is destined to be exterminated.

In this cruel ninja world, in the face of endless wars and exclusion from the village, what will Uchiha Qing do?

PS: Later in the book, the protagonist will develop a system of immortal cultivation. Cultivating Immortals in the Ninja World, have you seen it?

- Description from novelbuddy

Leon never asked for greatness.He just wanted to escape his flirty stepbrother and survive another miserable day.But fate had other plans—delivered by a lightning bolt and a cosmic accident.Reborn in a brutal world of mana, monsters, and cultivation, Leon starts at the bottom.No legacy. No allies. No system.Just seven divine treasure spins.And then—everything changes.[Class: Elemental Paragon(SSS)]A class whispered only in dread. A name that doesn’t exist—only a myth followed.Along with the class came another gift.[Ding!][Host successfully connected to Cosmic System!]Unlike the standard system others in his world use, Leon’s was different.It came with features no one else had—like a mysterious [SHOP], filled with items so rare they bordered on myth. Treasures that could warp reality. Twist fate.Even in the lowest of the low Earthly Planes, Leon could purchase artifacts of Legendary or even Mythical rank.But every treasure had a cost—one no amount of gold could pay.And then there was the [CHAT]. A place where the most terrifying beings in existence—galaxy-shattering Absolutes and universe-warping entities—casually exchanged words.Like The Keeper of The Dimensions, Lord of Space and Time…In that chat, Leon was mistaken as one of them.One of the powerful.One of the untouchable.In reality, he was weaker than a worm compared to them.But that wouldn’t last.Leon made himself a quiet promise:'One day, I’ll meet them for real.''And when I do…''I won’t be mistaken anymore.'He’ll rise.He’ll reach the apex.And the stars will remember his name.____#NO NTR#NO Yuri

The first time they met they had battled fiercely, just for a mere bunch of herbs. She needed it to save people, and he wanted to use it to save his own life.