Mage Manual - Chapter 244 - 210 Who Is She

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

Wen Xuxu is a tenacious, talented, smart and brave woman who was fostered by the Yan family at the age of four when she lost both her parents.

After a young lonely orphan boy died on earth, He was reborn as the Prince of the Everhart Kingdom in Melux. And in this life, he got everything he ever longed for: Luxuries that he didn't have, magic that he only read and fantasized about, different types of sweets that he didn't even know about but most importantly, he finally had a family!He was pleased with his new life as he had parents who despite being the King and Queen of a Kingdom always managed to spend time with him and His maid who would do anything at his words. He could experience the joy of sharing a dinner with family, getting angry over silly things, and then apologizing while bawling his eyes out. He finally felt like he was not alone in this universe anymore and he also had people who cared and loved him dearly. His second life was seemingly perfect in his eyes until that horrifying and gut-wrenching night that flipped his entire world......