[Apocalypse + younger man + reborn + sweet romance + healing + big-sister type | The Doomsday War God Under His Sister's Thumb]
Shen Qingyao opens a medical station in the ruins. In the fifth year of the apocalypse, she "picks up" a younger man who claims to be twenty.
Her new brother, Lu Jin, is handsome and powerful, and readily hands over his crystal cores. The only problem is, he can't look after himself.
So she manages him like a child: sets a curfew, confiscates snacks, checks his wounds, and reminds him to drink milk every night.
On the surface, Lu Jin is an obedient "sister's boy." Behind closed doors, however, he is the doomsday weapon known as the "Ember Emperor," a name that makes the whole world tremble.
Then an Abyss-class monster devours the front line, and humanity is on the brink of extinction. Cameras broadcasting live around the world focus on Lu Jin as he faces the enemy alone.
In the midst of despair, Shen Qingyao's call connects to the public channel, her cool voice echoing across the world:
"Lu Jin, check the time. What about your curfew, your milk, and today's psychological evaluation report?"
The war god, who is tearing the monster apart with his bare hands, freezes. His voice turns frantic in an instant:
"I'm sorry, Sis! I'll finish it right away! The report... I'm working on it!"
Three minutes later, the monster turns to ash.
Lu Jin teleports back to the city and, carrying a warmed cup of milk, edges over to Shen Qingyao under the stunned gaze of the entire world:
"Sis, I'm done. My energy's a little over the limit... Can I skip writing an apology tonight?"
Shen Qingyao glances at the cameras broadcasting to the world and smiles.
"What do you think, Mr. High-Risk Patient?"
In time, everyone learns that the only things capable of stopping the doomsday weapon aren't nuclear bombs, but a cup of milk, a curfew, and the doctor he calls his "administrator."
He uses the power to destroy the world in exchange for her saying, "Come home."
With the gentlest rules, she becomes the only medicine he needs.
