I'm a Good Person, I Just Pretend to Be One

[Two male leads + unhinged characters + mutual devotion + healing + faked death + gorgeous top + frail bottom]

The hostage prince from the enemy nation is so sweet and well-behaved, as soft as a rabbit.

Chang Xi transmigrates into a book, with the task of raising a child.

Step by step, he removes every danger from the boy's path, protects him as he returns home to seize power, and helps him ascend the throne.

Once the task is complete, Chang Xi fakes his death and disappears.

Jiang Nian descends into utter madness.

“If you leave me, I'll make the whole world pay for it.”

With no other choice, the System gives Chang Xi a new secret identity and sends him back to Jiang Nian to stop him from turning evil.

But!

Why can Jiang Nian recognize him at a glance?!

And why is he luring him in with such sickening obsession?