An Yan transmigrates into a book.
By chance, in this unfamiliar world, he meets a fellow countryman who arrived by soul transmigration. The man has a System and can go home once he finishes his mission.
The fellow countryman has had a miserable time. He is descended from the union of a human and a demon, and has been bullied relentlessly by his powerful clan. He sleeps in the outhouse and is covered in injuries. If An Yan hadn't saved him, he would have nearly died.
All alone in the world, An Yan decides to help his fellow countryman finish his mission and go home.
He sticks with him through hardship, struggling at the bottom and facing one challenge after another.
Later, the fellow countryman's cultivation reaches great heights, and he ascends.
But before leaving, the fellow countryman runs An Yan through with a sword and says tenderly, "Yan Yan, I'll take you home with me."
An Yan is heartbroken. Big brother, I transmigrated here in the flesh. If I die, I'm really dead!
Hundreds of years later, a mass grave is piled high with corpses.
An Yan's soul enters a corpse that's long been dead. Rage surges in him, and he cries to the heavens, "You scumbag! I raised you, supported you, and protected you your whole life, only for you to repay me with this!"
A sneer comes from a freshly dead corpse beside him.
An Yan senses trouble and cautiously asks, "Who are you?"
The corpse brother introduces himself. "Xu Xiujin."
Damn it, the scumbag!
This time, An Yan is so frightened that he turns and runs. He's not falling into the same trap twice!
But this body is too weak, and the other man grabs him and drags him back.
The corpse brother explains honestly, "I'm not that idiot Liu Ruiyi. I'm the original Xu Xiujin. Hundreds of years ago, I watched you two conspiring together and followed you all the way here. Then he stabbed you to death."
An Yan: ...
Two little victims who've both been hurt huddle together for warmth. An Yan wants to kill the scumbag, and Xu Xiujin wants to destroy the System. They hit it off at once and set out to defy fate!
Liu Ruiyi personally killed the boy who had once given him warmth in the abyss.
He thought that if the boy died, he could take him home.
Little did he know that the boy had transmigrated here in the flesh. After returning to the real world, Liu Ruiyi used all his connections to search for ten whole years, only to learn that a boy named An Yan had been missing for years after disappearing under mysterious circumstances.
He found the System and returned to the other world.
But this time, someone else already had a place by the boy's side...
Theme: Every effort is made to protect the people we cherish