Reborn in the world of Hokage, he becomes the younger brother of Shisui Uchiha and acquires a rather awful System called the Secret Realm System.
It issues missions at random, sending him to transmigrate across three thousand worlds. He can return only after completing each mission. Failure means death.
Soul Reaper Secret Realm: Kill Aizen.
One Piece Secret Realm: Kill Gol D. Roger, the Pirate King.
"I must have gotten a fake System." Uchiha Chen looks at the missions laid out before him.
This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.