Tan Xin binds herself to a System called Xiao Shi. Her mission is to travel through seven worlds and save seven villains who have fallen into darkness.
In the first life, she saves a top student who's being bullied. He says, "Wherever you go, I'll find you."
In the second life, she saves a regent whose entire family was slaughtered. He says, "In our next life, I'll find you again."
In the third life, she saves an abandoned esper. He says, "Don't die. I still owe you."
In the fourth life, she saves a Demon Lord who was betrayed. He says, "You lied to me, but I accepted it. Just come back."
In the fifth life, she saves a young marshal imprisoned by his desire for revenge. He says, "I won't stop you. But when you come back, I'll still be here."
In the sixth life, she saves an embodiment of the rules, trapped for ten thousand years. He says, "You took my rules away, and you took me with them."
In the seventh life, she finally meets him.
He remembers every life, but she has forgotten them all.
"You saved me six times. This time, I'll come find you."
But she doesn't know that every time she saves him, she comes one step closer to death.
And he'd rather remain incomplete forever than let her die.
