Pocket Hunting Dimension (WN) - Chapter 1286 - ing Ying’s New Form

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

Kazekaze thought he was just an ordinary kid in the world of Naruto.- No Sharingan.- No Byakugan.- No Ōtsutsuki bloodline.Just a normal seven-year-old trying to survive in a ninja-filled world.That was… until his father brought him back to Konoha.And he discovered the terrifying truth:* Senju Hashirama, the God of Shinobi, is his grandfather!* Senju Tobirama, the Creator of Ninjutsu, is his great-uncle!With the blood of legends flowing through his veins, Kazekaze must rise to become a shinobi worthy of his lineage.A Genius Among Monsters—But Can He Surpass Them?

A lecherous army special task force soldier from 21st-century Hong Kong is selected to travel back in time, choosing to go to the Chinese Warring States Period. Unfortunately, the time machine runs into an error during the experiment. With no foreseeable way to return to the present, he must use his combat skills and knowledge of history to thrive in his new life in the year 251 BC.