Legendary FBI Detective - Chapter 3 - : I am Acting in Self-Defense

Three Emperors have died in quick succession. The prince whom nobody had taken notice of unexpectedly succeeds to the throne. He is quickly plunged into layers upon layers of danger. The Empress Dowager dislikes him, wishing to install a younger, more obedient Emperor. His half-brother dislikes him, accusing him of stealing the throne that is rightfully his. The palace attendants and servants dislike him, believing that he is not a true Emperor. The Child Emperor must save himself.

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

When the Soul Plague arrived, it struck fast, transforming its victims into soulless monsters. The horde swept across the land unchecked—until the Awakened appeared. These survivors, immune to the plague, turned the tide of war into a bloody stalemate. But while the front lines held, the plague continued to spread and the horde only grew in number.Desperate for reinforcements, the World Government began conducting controlled infections of its able-bodied citizens to produce more Awakened. Hill was one of the conscripts. After going through a harrowing trial induced by the plague, his life was torn apart and remade: he emerged Awakened, endowed with strange new powers—but also bound by a dark curse that resides deep within his own soul.As Hill learns to wield his abilities alongside fellow survivors, he uncovers unsettling truths about the plague’s true nature and the hidden price of becoming one of humanity’s last line of defense.

She is one of the best thieves that the world has seen in the 24th century. However, not even in her wildest dreams had she imagine that she’d be reincarnated as a good-for-nothing orphaned Seventh Miss of the Vermilion Bird Family. She finds herself stuck in a family that mistreats her, as well as an unfamiliar place with no support system.