[Dual transmigration + mutual devotion + two-way pursuit + healing] The first-person tag is wrong, not the story!
[Obsessive, scheming top x delightfully unhinged bottom] (The top has always loved the bottom, and only him!)
After Fang Yufeng dies when surgery for his heart condition proves unsuccessful, a System calling itself 666 appears and tells him he can come back to life if he completes a mission. Since he’s already dead, Fang Yufeng figures he might as well give it a try. But when the mission begins, 666 tells him he’s a cannon-fodder character whose job is to survive until the finale. Cannon fodder? How is he supposed to play that role? He’ll still die, won’t he? Whatever, he’ll take matters into his own hands, cling to the protagonist, and survive to the end!
While he’s busy clinging to the protagonist, the villain keeps showing up by his side.
Fang Yufeng: Hey, hey, hey! What’s with the villain? Why isn’t he following the script? And what’s going on with the plot?
In the end, Fang Yufeng gives up worrying about it. As long as he can complete the mission, anything goes.
But no one told him the villain would confess to him!